Document:

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                                                                  EXHIBIT 10.143

FOURTH AMENDMENT TO CREDIT AGREEMENT

THIS FOURTH AMENDMENT TO CREDIT AGREEMENT (the "Fourth Amendment") is entered
into effective as of November 27, 2001, by and among CRESCENT OPERATING, INC., a
Delaware corporation ("Borrower") and BANK OF AMERICA, N.A., a national banking
association ("Lender"), with the acknowledgment, confirmation, approval and
agreement of the undersigned "Support Parties" (herein so called) as set forth
herein below. Such Support Parties are signing this Fourth Amendment solely for
the purposes set forth in Section 11 of this Fourth Amendment.

WITNESSETH:

WHEREAS, Borrower and Lender are parties to that certain Credit Agreement dated
as of August 27, 1997 (the "Original Credit Agreement") as amended by that
certain First Amendment to Credit Agreement dated effective as of August 27,
1998 (the "First Amendment"), that certain Second Amendment to Credit Agreement
dated effective as of August 27, 1999 (the "Second Amendment") and that certain
Third Amendment to Credit Agreement dated effective as of August 27, 2001 (the
"Third Amendment") (the Original Credit Agreement as amended by the First
Amendment , the Second Amendment and the Third Amendment is referred to in this
Fourth Amendment as the "Credit Agreement") and Borrower, Lender and Support
Parties are parties to that certain Support Agreement of even date with the
Original Credit Agreement, as previously amended and confirmed as set forth in
the First Amendment, Second Amendment and Third Amendment (the "Support
Agreement");

WHEREAS, Borrower and Support Parties have requested that Lender agree to a
short term renewal of the credit facility evidenced by the Credit Agreement and
extension of the "Termination Date" as currently defined in the Credit Agreement
to evidence a senior secured credit facility in favor of Lender and agree to
other amendments to the Credit Agreement, Support Agreement and other Loan
Papers and matters as set forth herein, and Lender is willing to do so upon the
terms and conditions set forth herein; and

WHEREAS, Borrower and Lender desire to amend the Credit Agreement by this Fourth
Amendment, with the acknowledgment, confirmation, approval and agreement of the
Support Parties with respect to the Support Agreement, all as set forth
hereinbelow, and the parties desire to enter into the agreements, modifications
and amendments as set forth below;

NOW, THEREFORE, for and in consideration of the above premises and for other
good and valuable consideration, the parties hereto agree as follows:

1. Definitions. All capitalized terms defined in the Credit Agreement, as
amended hereby. and not otherwise defined in this Fourth Amendment shall have
the same meanings as assigned to them in the Credit Agreement when used in this
Fourth Amendment, unless the context hereof shall otherwise require or provide.

2. Representations and Warranties. In order to induce Lender to enter into this
Fourth Amendment, Borrower represents and warrants to Lender that:

A. This Fourth Amendment, the Credit Agreement, as amended hereby, and the Loan
Papers are the legal and binding obligations of Borrower, enforceable in
accordance with their respective terms,

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except as limited by bankruptcy, insolvency or other laws of general application
relating to the enforcement of creditors' rights;

B. No event has occurred and is continuing which constitutes a Default or a
Potential Default; and

C. All of the representations and warranties contained in Paragraph 5 of the
Credit Agreement, as amended by this Fourth Amendment, are true and correct as
of the date hereof.

3. Amendment to Credit Agreement. In connection with the short term renewal and
extension of the credit facility evidenced by the Credit Agreement, as amended
by this Fourth Amendment, and the Loan Papers, the definition of the term
"Termination Date" as set forth in Paragraph 1 of the Credit Agreement and is
hereby amended and restate in its entirety to read as follows:

Termination Date means the earlier to occur of the following dates; (a) December
31, 2001 ; and (b) the effective date that Lender's commitment to extend credit
under this agreement is otherwise canceled or terminated in accordance with this
agreement.

4. The promissory note in the face principal amount of $15,000,000.00 dated
August 27, 2001 executed by Borrower and payable to Lender, evidencing a renewal
and extension of that certain promissory note in the face principal amount of
$15,000,000.00 dated August 27, 1999, such note evidencing a evidencing a
modification, renewal and extension of that certain promissory note in the face
principal amount of $15,000,000.00 dated August 27, 1997, each executed by
Borrower and payable to Lender (or its predeccssors in interest) and in
connection with the Original Credit Agreement, is hereby renewed and extended to
be evidenced by that certain promissory note dated of even date herewith in the
face principal amount of $15,000,000.00 executed by Borrower and payable to
Lender (sometimes referred to in this Fourth Amcndment and in connection
herewith as the "Second Short Term Renewal Note"), which the parties agree and
acknowledge to be the "Note" as contemplated in Paragraph 4(a) of the Credit
Agreement and a "Loan Paper" as defined in the Credit Agreement.

5. Conditions Precedent. This Fourth Amendment and the obligations of Lender
hereunder are subject to the conditions precedent that Lender shall have
received from Borrower, together wjth this Fourth Amendment duly executed by
Borrower, Richard E. Rainwater and John Goff: (i) the Second Short Term Renewal
Note, duly executed by Borrower, and anyother documents requested by Lender
prior to closing in connection herewith, in form and substance satisfactory to
Lender and its counsel, and (ii) payment of Lender's costs and expenses incurred
in connection herewith as contemplated in the Credit Agreement including,
without limitation, the reasonable attorney's fees of the Lender's legal counsel
and any other costs, expenses and disbursements incurred by Lender through the
date of execution of this Fourth Amendment.

6. Further Assurances. Borrower shall make, execute or endorse, and acknowledge
and deliver or file or cause same to be done, all such documents, notices or
other assurances and take all such other action, as Lender may, from time to
time, deem reasonably necessary or proper in connection with this Fourth
Amendment and the Credit Agreement, as amended hereby.

7. Scope of Amendments. Any and all other provisions of the Cred1t Agreement and
any other Loan Papers are hereby amended and modified wherever necessary and
even though not specifically addressed herein, so as to conform to the
amendments and modifications set forth in this Fourth Amendment.

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8. Limitation on Agreements. The amendments set forth herein are limited in
scope as described herein and shall not be deemed (a) to be a consent under or
waiver of any other term or condition of the Credit Agreement or any of the Loan
Papers, or (b) to prejudice any right or rights which Lender now has or may have
in the future under, or in connection with the Credit Agreement as amended by
this Fourth Amendment, the Note, the Loan Papers or any of the documents
referred to herein or therein.

9. Governing Law. This Fourth Amendment has been prepared, in being executed and
delivered and is intended to be performed in the State of Texas, and the
substantive laws of such state and the applicable.

10. ARBITRATION. ANY CONTROVERSY OR CLAIM BETWEEN OR AMONG THE PARTIES HERETO,
INCLUDING, BUT NOT LIMITED TO, THOSE ARISING OUT OF OR RELATING TO THIS
AGREEMENT OR ANY RELATED AGREEMENTS OR INSTRUMENTS, INCLUDING ANY CLAIM BASED ON
OR ARISING FROM AN ALLEGED TORT, SHALL BE DETERMINED BY BINDING ARBITRATION IN
ACCORDANCE WITH THE FEDERAL ARBITRATION ACT (OR IF NOT APPLICABLE, THE
APPLICABLE STATE LAW). THE RULES OF PRACTICE AND PROCEDURE FOR THE ARBITRATION
OF COMMERCIAL DISPUTES OF JUDICIAL ARBITRATION AND MEDIATION SERVICES, INC.
(J.A.M.S.), AND THE "SPECIAL RULES" SET FORTH BELOW. IN THE EVENT OF ANY
INCONSISTENCY, THE SPECIAL RULES SHALL CONTROL. JUDGMENT UPON ANY ARBITRATION
AWARD MAY BE ENTERED IN ANY COURT HAVING JURISDICTION. ANY PARTY TO THIS CREDIT
AGREEMENT MAY BRING AN ACTION, INCLUDING A SUMMARY OR EXPEDITED PROCEEDING, TO
COMPEL ARBITRATION OF ANY CONTROVERSY OR CLAIM TO WHICH THIS AGREEMENT APPLIES
IN ANY COURT HA VING JURJSDICTION OVER SUCH ACTION.

A. SPECIAL RULES. THE ARBITRATION SHALL BE CONDUCTED IN THE CITY OF THE
BORROWER'S DOMICILE AT TIME OF THIS AGREEMENT'S EXECUTION AND ADMINISTERED BY
J.A.M.S. WHO WILL APPOINT AN ARBITRATOR; IF J.A.M.S. IS UNABLE OR LEGALLY
PRECLUDED FROM ADMINISTERING THE ARBITRATION, THEN THE AMERICAN ARBITRATION
ASSOCIATION WILL SERVE ALL ARBITRATION HEARINGS WILL BE COMMENCED WITHIN NINETY
(90) DAYS OF THE DEMAND FOR ARBITRATION; FURTHER, THE ARBITRATOR SHALL ONLY,
UPON A SHOWING OF CAUSE, BE PERMITTED TO EXTEND THE COMMENCEMENT OF SUCH HEARING
FOR UP TO AN ADDITIONAL SIXTY (60) DAYS.

B. RESERVATION OF RIGHTS. NOTHING IN THIS AGREEMENT SHALL BE DEEMED TO: (I)
LIMIT THE APPLICABILITY OF ANY OTHERWISE APPLICABLE STATUTES OF LIMITATION OR
REPOSE AND ANY WAIVERS CONTAINED IN THIS AGREEMENT; OR (II) BE A WAIVER BY THE
LENDER OF THE PROTECTION AFFORDED TO IT BY 12 U.S.C. SEC. 91 OR ANY
SUBSTANTIALLY EQUALLY EQUIVALENT STATE LAW; OR (III) LIMIT THE RIGHT OF THE
LENDER HERETO: (A) TO EXERCISE SELF HELP REMEDIES SUCH AS (BUT NOT LIMITED TO)
SETOFF; OR (B) TO FORECLOSE AGAINST ANY REAL OR PERSONAL PROPERTY COLLATERAL, OR
(C) TO OBTAIN FROM A COURT PROVISIONAL OR ANCILLARY REMEDIES SUCH AS (BUT NOT
LIMITED TO) INJUNCTIVE RELIEF, WRIT OF POSSESSION OR THE APPOINTMENT OF A
RECEIVER. THE LENDER MAY EXERCISE SUCH SELF HELP RIGHTS, FORECLOSE UPON SUCH
PROPERTY, OR OBTAIN SUCH PROVISIONAL OR ANCILLARY REMEDIES BEFORE, DURING OR
AFTER THE PENDENCY OF ANY ARBITRATION PROCEEDING BROUGHT

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PURSUANT TO THIS AGREEMENT. NEITHER THIS EXERCISE OF SELF HELP REMEDIES NOR THE
INSTITUTION OR MAINTENANCE OF AN ACTION FOR FORECLOSURE OR PROVISIONAL OR
ANCILLARY REMEDIES SHALL CONSTITUTE A WAIVER OF THE RIGHT OF ANY PARTY,
INCLUDING THE CLAIMANT IN ANY SUCH ACTION, TO ARBITRATE THE MERITS OF THE
CONTROVERSY OR CLAIM OCCASIONING RESORT TO SUCH REMEDIES.

11. Multiple Counterparts. This Fourth Amendment may be executed in any number
of counterparts, all of which taken together shall constitute one and the same
agreement, and any of the parties hereto may execute this Fourth Amendment by
signing any such counterpart.

12. Signatures of Support Parties. By signing below where indicated, the
undersigned Support Parties each (a) acknowledge this Fourth Amendment and the
Credit Agreement a.s amended hereby; (b) agree with the terms, conditions and
amendments a contained in this Fourth Amendment and the Credit Agreement as
amended hereby as they relates to the Support Agreement , including without
limitation, the amended definition of "Termination Date" as set fourth in this
Fourth Amendment; (c) agree that the Support Agreement shall be deemed and
amended wherever necessary in order to continue the obligations of the
undersigned Support Partners contained in the Support Agreement and confirm to
the changes reflected in this Fourth Amendment; and (d) confirm their continuing
obligations under the Support Agreement, as amended hereby, which shall continue
in full force and effect as contemplated therein and herein, until the
Obligation has been paid in full and Lender shall have no further commitment to
make Advances.

THE CREDIT AGREEMENT AND THE SUPPORT AGREEMENT, AS EACH IS AMENDED BY THIS
FOURTH AMENDMENT, AND THE OTHER LOAN PAPERS REPRESENT THE FINAL AGREEMENT
BETWEEN THE PARTIES AND MAY NOT BE CONTRADICTED BY EVIDENCE OF PRIOR,
CONTEMPORANEOUS, OR SUBSEQUENT ORAL AGREEMENT OF THE PARTIES. THERE ARE NO
UNWRITTEN ORAL AGREEMENTS BETWEEN THE PARTIES.

IN WITNESS WHEREOF, the parties hereto have caused this Fourth Amendment to be
executed to be effective as of the date and year first above written.

LENDER

BANK OF AMERICA

By:          /s/
   -------------------------------
Cary C. Conwell, Senior Vice President

BORROWER

CRESCENT OPERATING, INC., a Delaware corporation

By:          /s/
   -------------------------------
Jeff Stevens, Executive Vice President
and Chief Operation Officer

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SUPPORT PARTIES:

      /s/
----------------------------------
RICHARD E. RAINWATER

      /s/
----------------------------------
JOHN GOFF

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                                 PROMISSORY NOTE

$15,000,000.00                  Fort Worth, Texas              November 27, 2001

         FOR VALUE RECEIVED, Crescent Operating, Inc., a Delaware corporation
("Maker"), promises to pay to the order of BANK OF AMERICA, N.A., a national
banking association ("Payee"), at its principal offices at 500 West Seventh
Street, Fort Worth, Tarrant County, Texas 76102-4700, that portion of the
principal amount of $15,000,000.00 that may be disbursed and outstanding under
this note, together with interest.

         This note evidences a renewal and extension of that certain promissory
note dated August 27,2001 executed by Maker and payable to Payee (or its
predecessors in interest) and is the "Note" as defined in the Credit Agreement
dated as of August 27, 1997, between Maker and Payee (as amended by the First
Amendment thereto dated effective as of August 27, 1998, the Second Amendment
thereto dated effective as of August 27, 1999, the Third Amendment dated
effective as of August 27, 2001, and the Fourth Amendment thereto dated
effective as of the date of this note, and as it may be further renewed,
extended, amended or restated, referred to herein as the "Credit Agreement"),
and the "Second Short Term Renewal Note" as defined in the Fourth Amendment just
described in the immediately preceding parenthetical contained in this sentence.
All of the defined terms in the Credit Agreement have the same meanings when
used in this note.

         This note incorporates by reference all provisions in the Credit
Agreement, including, without limitation, all provisions applicable to this note
-- such as provisions for use of proceeds, disbursements of principal,
applicable interest rates before and after Default, voluntary and mandatory
prepayments, acceleration of maturity, exercise of rights, assurances and
security, choice of Texas and United States federal law, usury savings and other
matters applicable to "Loan Papers" under the Credit Agreement.

         Interest on this note is due and payable as it accrues on the last day
of each calendar month -- beginning December 27, 2001 -- during the term of this
note and on the final maturity date of this note.

         Before the Termination Date and subject to the Credit Agreement,
principal of this note may be repaid and reborrowed. The unpaid principal
balance of this note is due and payable on the Termination Date.

         If this note is placed in the hands of an attorney for collection, or
if it is collected through any legal proceedings, Maker agrees to pay court
costs, reasonable attorneys' fees and other costs of collection of the holder of
this note.

         Maker and each surety, endorser, guarantor and other party ever liable
for payment of any part of this note jointly and severally waive presentment and
demand for payment, protest and notice of protest and nonpayment, intention to
accelerate and acceleration, and agree that their liability on this note shall
not be affected by, and consent to, any renewal or extension in the time of
payment of this note, any indulgences or any release or change in any security
for the payment of this note.

         THIS NOTE, THE CREDIT AGREEMENT AND THE RELATED LOAN PAPERS REPRESENT
THE FINAL AGREEMENT BETWEEN THE PARTIES AND MAY NOT BE CONTRADICTED BY EVIDENCE
OF PRIOR, CONTEMPORANEOUS OR SUBSEQUENT ORAL AGREEMENTS OF THE PARTIES. THERE
ARE NO UNWRITTEN ORAL AGREEMENTS BETWEEN THE PARTIES.

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                                MAKER:
                                CRESCENT OPERATING, INC., a Delaware corporation

                                By:
                                   ---------------------------------------------
                                      Jeff Stevens, Executive Vice President
                                      and Chief Operating Officer

                                       7<PAGE>
                                                                  EXHIBIT 10.144

                       FIFTH AMENDMENT TO CREDIT AGREEMENT

THIS FIFTH AMENDMENT TO CREDIT AGREEMENT (the "Fifth Amendment") is entered into
effective as of December 31, 2001, by and among CRESCENT OPERATING, INC., a
Delaware corporation ("Borrower"), and BANK OF AMERICA, N.A., a national banking
association ("Lender"), with the acknowledgment, confirmation, approval and
agreement of the undersigned "Support Parties" (herein so called) as set forth
herein below. Such Support Parties are signing this Fifth Amendment solely for
the purposes set forth in Section 12 of this Fifth Amendment.

                                   WITNESSETH:

         WHEREAS, Borrower and Lender are parties to that certain Credit
Agreement dated as of August 27, 1997 (the "Original Credit Agreement") as
amended by First Amendment thereto dated effective as of August 27, 1998 ("First
Amendment"), Second Amendment thereto dated effective as of August 27, 1999
("Second Amendment"), Third Amendment thereto dated effective as of August 27,
2001 ("Third Amendment") and Fourth Amendment thereto dated effective as of
November 27, 2001 ("Fourth Amendment")(the Original Credit Agreement as amended
by First Amendment, Second Amendment, Third Amendment and Fourth Amendment is
referred to in this Fifth Amendment as the "Credit Agreement") and Borrower,
Lender and Support Parties are parties to that certain Support Agreement of even
date with the Original Credit Agreement, as previously amended and confirmed as
set forth in the First Amendment, Second Amendment, Third Amendment and Fourth
Amendment (the "Support Agreement");

         WHEREAS, Borrower and Support Parties have requested that Lender agree
to modify the loan/ credit facility evidenced by the Credit Agreement and extend
the "Termination Date" as currently defined in the Credit Agreement to evidence
a senior secured credit facility in favor of Lender and agree to other
amendments to the Credit Agreement, Support Agreement and other Loan Papers and
matters as set forth herein, and Lender is willing to do so upon the terms and
conditions set forth herein; and

         WHEREAS, Borrower and Lender desire to amend the Credit Agreement by
this Fifth Amendment, with the acknowledgment, confirmation, approval and
agreement of the Support Parties with respect to the Support Agreement, all as
set forth hereinbelow, and the parties desire to enter into the agreements,
modifications and amendments as set forth below;

         NOW, THEREFORE, for and in consideration of the above premises and for
other good and valuable consideration, the parties hereto agree as follows:

         1. Definitions. All capitalized terms defined in the Credit Agreement,
as amended hereby, and not otherwise defined in this Fifth Amendment shall have
the same meanings as assigned to them in the Credit Agreement when used in this
Fifth Amendment, unless the context hereof shall otherwise require or provide.

2. Representations and Warranties. In order to induce Lender to enter into this
Fifth Amendment, Borrower represents and warrants to Lender that:

         A. This Fifth Amendment, the Credit Agreement, as amended hereby, and
the Loan Papers are the legal and binding obligations of Borrower, enforceable
in accordance with their respective terms, except as limited by bankruptcy,
insolvency or other laws of general application relating to the enforcement of
creditors' rights;

         B. Subject to the terms of subsection D of this Section 2 of this Fifth
Amendment, no event has occurred and is continuing which constitutes a Default
or a Potential Default; and

<PAGE>

         C. Subject to the terms of subsection D of this Section 2 of this Fifth
Amendment, all of the representations and warranties contained in Paragraph 5 of
the Credit Agreement, as amended by this Fifth Amendment, are true and correct
as of the date hereof.

         D. Borrower and Lender agree that the Defaults which exist as of any
date on which this Fifth Amendment is executed and delivered shall all be deemed
temporarily satisfied and cured upon execution and delivery of this Fifth
Amendment by all parties hereto and fulfillment of all other conditions
precedent as set forth in Section 5 of this Fifth Amendment and acceptance by
Lender of this Fifth Amendment; provided, however, notwithstanding anything to
the contrary contained herein or in the Credit Agreement or any of the Loan
Papers, Lender specifically reserves and does not waive in any respect all of
its rights under the Credit Agreement and the Support Agreement, as each is
amended by this Fifth Amendment, and the other Loan Papers, with respect to such
Defaults, which shall automatically be reinstated upon the occurrence of any
additional Default after March 8, 2002.

         3. Amendments to Credit Agreement.

         A. In connection with the modification and extension of the loan/
credit facility evidenced by the Credit Agreement, as amended by this Fifth
Amendment, and the Loan Papers, the definition of the term"Termination Date" as
set forth in Paragraph 1 of the Credit Agreement is hereby amended and restated
in its entirety to read as follows:

         Termination Date means the earlier to occur of the following dates: (a)
August 15, 2002; and (b) the date on which a Default occurs, as determined by
Lender.

         B. The definition of the term"Base Rate" as set forth in Paragraph 1 of
the Credit Agreement is hereby amended and restated in its entirety to read as
follows:

         Base Rate means the rate of interest publicly announced from time to
time by Lender as its Prime Rate (the "Index"), plus zero percent (0.00%) per
annum. The Prime Rate is set by the Lender based on various factors, including
the Lender's costs and desired return, general economic conditions and other
factors, and is used as a reference point for pricing some loans. The Lender may
price loans to its customers at, above, or below the Prime Rate. Any change in
the Prime Rate shall take effect at the opening of business on the day specified
in the public announcement of a change in the Lender's Prime Rate. The Index is
not necessarily the lowest rate charged by Lender on its loans and is set by
Lender in its sole discretion. If the Index becomes unavailable during the term
of this loan, Lender may designate a substitute index after notifying Borrower.
Lender will tell Borrower the current Index rate upon Borrower's request.
Interest will accrue on any non-business day at the rate in effect on the
immediately preceding business day.

         C. Paragraph 2 of the Credit Agreement is hereby amended and restated
in its entirety to read as follows:

         2. No Commitment to make Advances. Notwithstanding anything to the
contrary contained in this agreement or any of the Loan Papers or elsewhere, (a)
Lender shall have no obligation to make any further Advances or extend
additional credit to Borrower, and (b) Borrower shall not be entitled to
re-borrow any amount repaid hereunder or under the Note, it being understood and
agreed that the loan/ credit facility evidenced hereby is fully funded and
evidences a term loan and not a revolving credit facility.

         D. Paragraph 3 of the Credit Agreement is hereby amended and restated
in its entirety to read as follows:

<PAGE>

         3. Interest Rate. Except as otherwise stated, the Principal Debt shall
bear interest at a rate per annum equal to the lesser of: (a) the Maximum Rate;
and (b) the Base Rate, as set forth herein. Each change in the Base Rate and
Maximum Rate, subject to the terms of this agreement, will become effective,
without notice to Borrower or any other Person, upon the effective date of that
change.

         (a) Default Rate. At Lender's option and to the extent permitted by
law, all past due Principal Debt and accrued interest thereon shall bear
interest from the date due and payable (stated or by acceleration) at the
Default Rate until paid, regardless whether such payment is made before or after
entry of a judgment.

         (b) Maximum Rate. Regardless of any provision contained in any of the
Loan Papers, Lender shall never be entitled to contract for, charge, take,
reserve, receive or apply, as interest on the Obligation, or any part thereof,
any amount in excess of the Maximum Rate, and, in the event Lender ever
contracts for, charges, takes, reserves, receives or applies as interest any
such excess, it shall be deemed a partial prepayment of principal and treated
hereunder as such and any remaining excess shall be refunded to Borrower. In
determining whether or not the interest paid or payable, under any specific
contingency, exceeds the Maximum Rate, Borrower and Lender shall, to the maximum
extent permitted under applicable law: (a) treat all Advances as but a single
extension of credit (and Lender and Borrower agree that such is the case and
that provision herein for multiple Advances is for convenience only); (b)
characterize any non-principal payment as an expense, fee or premium rather than
as interest; (c) exclude voluntary prepayments and the effects thereof; and (d)
"spread" the total amount of interest throughout the entire contemplated term of
the Obligation; provided that, if the Obligation is paid and performed in full
prior to the end of the full contemplated term thereof, and if the interest
received for the actual period of existence thereof exceeds the Maximum Amount,
Lender shall refund such excess, and, in such event, Lender shall not to the
extent permitted bylaw, be subject to any penalties provided by any laws for
contracting for, charging, taking, reserving or receiving interest in excess of
the Maximum Amount. To the extent the laws of the State of Texas are applicable
for purposes of determining the "Maximum Rate" or the "Maximum Amount", such
term shall mean the "indicated rate ceiling" from time to time in effect under
Article 1.04, Title 79, Revised Civil Statutes of Texas, as amended. Pursuant to
Article 15.10(b) of Chapter 15, Subtitle 79, Revised Civil Statutes of Texas,
1925, as amended, Borrower agrees that such Chapter 15 (which regulates certain
revolving credit loan accounts and revolving tri-party accounts) shall not
govern or in any manner apply to the Obligation.

         E. Clause (d) of Paragraph 4 of the Credit Agreement is hereby deleted
in its entirety.

         F. Paragraphs 4A and 4B are hereby added to the Credit Agreement, to
immediately follow Paragraph 4 of the Credit Agreement, and to read as follows:

         4A. Security. To secure the payment of the indebtedness evidenced by
the Note and the entire Obligation, and such other indebtedness as may be
specifically described in the respective "Collateral Documents" (as defined
below), Borrower has pledged, assigned and granted, and shall continue to
pledge, assign and grant from time to time, in favor of Lender, its successors
and assigns, continuing first priority liens and security interests (subject
only to permitted liens and exceptions as specifically disclosed to and approved
by Lender in writing) in and to certain assets and properties of Borrower (all
of the liens, security interests and other interests and rights in and to such
assets and properties, together with all collateral described in the Collateral
Documents as described below, are herein collectively referred to as
the"Collateral"). The Collateral shall be evidenced by, amon other things,
pledge agreements, assignments, security agreements, financing statements, and
other documents, confirmations, renewals, extensions and amendments, all of
which must be in form and substance in all respects acceptable to Lender, said
documents including, without limitation, an Assignment/ Pledge (Security
Agreement) dated effective as of December 31, 2001, executed by Borrower in
favor of Lender, including all attachments thereto and other documents executed
or delivered in connection therewith, and any and all other assignments and
other documents and agreements, and amendments and supplements thereto, as
applicable, as may be reasonably

<PAGE>

required by Lender from time to time (sometimes collectively referred to as the
"Assignments") granting unto Lender a first priority perfected lien and security
interest in and to all of Borrower's right, title and interest, but not
obligations, in COPI Cold Storage, LLC, a Delaware limited liability company,
and all other collateral documents and related documentation including blank
stock powers and possession of any and all certificates evidencing such
ownership, each to be dated, executed, acknowledged, as the case may be, and
delivered by Borrower as of a date acceptable to Lender, but it being expressly
intended by the parties hereto that such Collateral Documents shall be deemed an
integral part of the transactions evidenced by this agreement and simultaneous
herewith, it being expressly understood by Borrower that Lender would not make
the loan evidenced hereby (it being expressly understood and agreed that Lender
makes no commitment whatsoever to make any further or additional renewal or
extension of the Note or any other loan or credit whatsoever) without the
assurance from Borrower of receiving all of the security described in this
Paragraph 4A as and when reasonably demanded by Lender, together with any
documents and instruments from time to time amending or supplementing the same,
as well as all other collateral documents assigned to or otherwise taken by
Lender, on a cumulative basis (all of the foregoing documents described and
referred to in this Paragraph 4A, as they may be modified, amended, and
supplemented from time to time, are sometimes collectively called the
"Collateral Documents"). Borrower shall deliver, or cause to be delivered, such
additional security agreements, financing statements, assignments and other
collateral documents (all of which shall be deemed part of the Collateral
Documents), as well as physical possession of any original Collateral consisting
of certificates, notes, instruments, chattel paper or similar property in
connection therewith or as Lender may reasonably request from time to time, all
in form and substance satisfactory to Lender, for the purpose of granting to, or
maintaining or perfecting in favor of Lender, liens and security interests in
any of the Collateral, together with other assurances of the enforceability and
priority of such liens and security interests and assurances of due recording
and documentation of copy of the Collateral Documents, including, without
limitation, as may be reasonably required to avoid material impairment of the
liens and security interests granted or purported to be granted pursuant to the
Collateral Documents and this Paragraph 4A. Notwithstanding anything to the
contrary contained herein, it is understood and agreed by the parties that, as
of the date hereof, the first priority lien and security interest in favor of
Lender under the Collateral Documents is limited to the first priority lien and
security interest in and to all of Borrower's right, title and interest, but not
obligations, in and to COPI Cold Storage, LLC, as specifically described in the
Assignment/ Pledge (Security Agreement) dated effective as of December 31, 2001,
executed in connection herewith by Borrower in favor of Lender.

         4B. Additional Representations, Covenants. In addition to the other
representations, warranties and covenants made by Borrower in this agreement and
in the Loan Papers, Borrower represents, warrants and covenants to Lender that:
(a) Borrower is the sole owner of all legal and beneficial title and interest in
and to the property and assets contemplated to be covered by the Collateral
Documents described in this agreement, and no other person or entity has any
known or asserted claim, right title or interest in or to any of such assets,
except as has been specifically disclosed to and approved by Lender in writing;
(b) as of the date of the Fifth Amendment to this agreement, the indebtedness
evidenced by the Note (as modified and extended by the Modification Note as
defined in such Fifth Amendment) is acknowledged to be valid, enforceable and
payable in accordance with the terms thereof, and Borrower has no claims, or
defenses or counterclaims to payment thereof or against Lender or any of its
affiliates, representatives, agents or attorneys arising out of or in connection
with this agreement or any of the Loan Papers; (c) Borrower has delivered to
Lender a copy of the latest available financial statements of Borrower and, as a
material inducement to Lender to enter into this Fifth Amendment and the Loan
Papers in connection herewith, provided a plan of payment (which shall not be
binding upon Lender) pursuant to which plan payment of the entire Obligation
(including but not limited to all principal, interest accruing before and after
any bankruptcy filing, costs and expenses of Lender and any and all other
obligations and debts of Borrower to Lender) shall be made to Lender when due;
such financial statements fairly present the financial condition of

<PAGE>

Borrower as of such date and have been prepared in accordance with normal
accounting principles applied on a basis consistent with that of prior periods;
as of the date hereof, there is no material indebtedness, contingent or
otherwise, of Borrower which is not reflected in such financial statements; no
Material Adverse Event has occurred with respect to the financial condition or
business of Borrower, since the date of such financial statements and plan of
payment referred to above (which shall not be binding upon Lender), and there is
no material fact that Borrower has not disclosed to Lender which could
reasonably be expected to have a material adverse effect on the properties
(including the Collateral), business, prospects or condition (financial or
otherwise) of Borrower and neither the financial statements nor plan of payment
referred above (which shall not be binding upon Lender), nor any certificate or
statement delivered herewith or heretofore by Borrower to Lender in connection
with negotiations of this agreement, contains any untrue statement of a material
fact or omits to state any material fact necessary to keep the statements
contained herein or therein from being misleading; Borrower specifically
represents to Lender that the only material creditors of Borrower are Crescent
Real Estate Equities Limited Partnership and Lender as previously described to
Lender by Borrower; (d) except as previously disclosed and approved in writing
to Lender, the properties and assets of Borrower are free and clear of all
liens, security interests and other adverse claims of any nature and Borrower
has and will have good and indefeasible title to such properties; (e) (unless
Lender shall otherwise consent in writing) Borrower shall not grant, suffer or
permit any further contractual or non-contractual liens, encumbrances, charges
or security interests on any of the Collateral or property of Borrower, except
in favor of Lender and except for any other liens which may specifically be
permitted by Lender in writing signed by a duly authorized officer of Lender, or
fail to promptly pay when due all lawful and material claims, whether for labor,
materials or otherwise, the failure of which to pay could result in the filing
or creation of any such liens, encumbrances, charges or security interests.
Borrower agrees not to enter into any other similar negative pledge agreements,
covenants or similar agreements with any persons or entities other than Lender,
it being understood and agreed by Borrower that in the event of any violation of
this agreement or any of the covenants contained in this Paragraph 4B, Lender
shall have the right in addition to such other remedies as may be available to
it by virtue of such violation constituting a Default, to injunctive relief
enjoining such breach of this agreement and neither Borrower nor his
representatives shall urge that such remedy is not appropriate under the
circumstances, it being expressly acknowledged that such action shall cause the
Lender irreparable damage for which legal remedies are inadequate to protect the
Lender. Borrower specifically represents and warrants to Lender that there
exists no certificate, paper or other similar evidence of its ownership or
membership in COPI Cold Storage, LLC, a Delaware limited liability company,
except for the "Operative Documents" as defined in the Assignments, and the
First Amendment to Operating Agreement dated March 7, 2002, a copy of which has
been provided to Lender.

         G. Clause (j) of Paragraph 5 of the Credit Agreement is hereby deleted
in its entirety.

         4. The promissory note in the face principal amount of $15,000,000.00
dated November 27, 2001 executed by Borrower and payable to Lender, evidencing a
renewal and extension of that certain promissory note in the face principal
amount of $15,000,000.00 dated August 27, 2001, such note evidencing a renewal
and extension of that certain promissory note in the face principal amount of
$15,000,000.00 dated August 27, 1999, such note evidencing a modification,
renewal and extension of that certain promissory note in the face principal
amount of $15,000,000.00 dated August 27, 1997, each executed by Borrower and
payable to Lender (or its predecessors in interest)

<PAGE>

and in connection with the Original Credit Agreement, is hereby modified and
extended to be evidenced by that certain promissory note dated as of December
31, 2001, in the face principal amount of $15,000,000.00 executed by Borrower
and payable to Lender (sometimes referred to in this Fifth Amendment and in
connection herewith as the "Modification Note"), which the parties agree and
acknowledge to be the "Note" as contemplated in Paragraph 4(a) of the Credit
Agreement and a "Loan Paper" as defined in the Credit Agreement.

         5. Conditions Precedent. This Fifth Amendment and the obligations of
Lender hereunder are subject to the conditions precedent that Lender shall have
received from Borrower, together with this Fifth Amendment duly executed by
Borrower, Richard E. Rainwater and John Goff: (i) the Modification Note and the
Assignments and such other Collateral Documents, duly executed by Borrower and
any other parties thereto, an opinion of Borrower's counsel in connection
herewith, in form and substance reasonably acceptable to Lender and its counsel,
and any other documents reasonably requested by Lender prior to closing in
connection herewith, in form and substance satisfactory to Lender and its
counsel, (ii) a Subordination Agreement dated effective as of December 31, 2001,
duly executed by Crescent Real Estate Equities Limited Partnership in favor of
Lender; and (iii) payment of Lender's costs and expenses incurred in connection
herewith as contemplated in the Credit Agreement including, without limitation,
the reasonable attorney's fees of the Lender's legal counsel and any other
costs, expenses and disbursements incurred by Lender through the date of
execution of this Fifth Amendment.

         6. Further Assurances. Borrower shall make, execute or endorse, and
acknowledge and deliver or file or cause same to be done, all such documents,
notices or other assurances, and take all such other action, as Lender may, from
time to time, deem reasonably necessary or proper in connection with this Fifth
Amendment and the Credit Agreement, as amended hereby.

         7. Scope of Amendments. Any and all other provisions of the Credit
Agreement and any other Loan Papers are hereby amended and modified wherever
necessary and even though not specifically addressed herein, so as to conform to
the amendments and modifications set forth in this Fifth Amendment.

         8. Limitation on Agreements. The amendments set forth herein are
limited in scope as described herein and shall not be deemed (a) to be a consent
under or waiver of any other term or condition of the Credit Agreement or any of
the Loan Papers, or (b) to prejudice any right or rights which Lender now has or
may have in the future under, or in connection with the Credit Agreement as
amended by this Fifth Amendment, the Note, the Loan Papers or any of the
documents referred to herein or therein.

         9. Governing Law. This Fifth Amendment has been prepared, in being
executed and delivered and is intended to be performed in the State of Texas,
and the substantive laws of such state and the applicable federal laws of the
United States of America shall govern the validity, construction, enforcement
and interpretation of this Fifth Amendment.

10. Arbitration and Waiver of Jury Trial.

(a) This Section concerns the resolution of any controversies or claims between
any of the parties hereto and Lender, whether arising in contract, tort or by
statute, including but not limited to controversies or claims that arise out of
or relate to: (i) this Fifth Amendment, the Credit Agreement as amended hereby,
the Modification Note or any of the other Loan Papers (including any amendments,
renewals, extensions or modifications of any of the foregoing); or (ii) any
document related to this Fifth Amendment, the Credit Agreement as amended
hereby, the Modification Note or any of the other Loan Papers; (collectively a
"Claim").

<PAGE>

(b) At the request of any of the parties hereto or the Lender, any Claim shall
be resolved by binding arbitration in accordance with the Federal Arbitration
Act (Title 9, U. S. Code) (the "Act"). The Act will apply even though the Credit
Agreement and Loan Papers provide that it is governed by the law of a specified
state.

(c) Arbitration proceedings will be determined in accordance with the Act, the
applicable rules and procedures for the arbitration of disputes of JAMS or any
successor thereof ("JAMS"), and the terms of this Section. In the event of any
inconsistency, the terms of this paragraph shall control.

(d) The arbitration shall be administered by JAMS and conducted in any U. S.
state where real or tangible personal property collateral for this credit is
located or if there is no such collateral, in the state of Texas. All Claims
shall be determined by one arbitrator; however, if Claims exceed $5,000,000,
upon the request of any party, the Claims shall be decided by three arbitrators.
All arbitration hearings shall commence within 90 days of the demand for
arbitration and close within 90 days of commencement and the award of the
arbitrator(s) shall be issued within 30 days of the close of the hearing.
However, the arbitrator(s), upon a showing of good cause, may extend the
commencement of the hearing for up to an additional 60 days. The arbitrator(s)
shall provide a concise written statement of reasons for the award. The
arbitration award may be submitted to any court having jurisdiction to be
confirmed and enforced.

(e) The arbitrator(s) will have the authority to decide whether any Claim is
barred by the statute of limitations and, if so, to dismiss the arbitration on
that basis. For purposes of the application of the statute of limitations, the
service on JAMS under applicable JAMS rules of a notice of Claim is the
equivalent of the filing of a lawsuit. Any dispute concerning this arbitration
provision or whether a Claim is arbitrable shall be determined by the
arbitrator(s). The arbitrator(s) shall have the power to award legal fees
pursuant to the terms of this Fifth Amendment, the Credit Agreement as amended
hereby, the Modification Note or any of the other Loan Papers.

(f) This paragraph does not limit the right of any of the parties hereto or the
Lender to: (i) exercise self-help remedies, such as but not limited to, setoff;
(ii) initiate judicial or non-judicial foreclosure against any real or personal
property collateral; (iii) exercise any judicial or power of sale rights, or
(iv) act in a court of law to obtain an interim remedy, such as but not limited
to, injunctive relief, writ of possession or appointment of a receiver, or
additional or supplementary remedies.

(g) The filing of a court action is not intended to constitute a waiver of the
right of any of Borrower or the Lender, including the suing party, thereafter to
require submittal of the Claim to arbitration.

(h) BY AGREEING TO BINDING ARBITRATION, THE PARTIES IRREVOCABLY AND VOLUNTARILY
WAIVE ANY RIGHT THEY MAY HAVE TO A TRIAL BY JURY IN RESPECT OF ANY CLAIM.
FURTHERMORE, WITHOUT INTENDING IN ANY WAY TO LIMIT THIS AGREEMENT TO ARBITRATE,
TO THE EXTENT ANY CLAIM IS NOT ARBITRATED, THE PARTIES IRREVOCABLY AND
VOLUNTARILY WAIVE ANY RIGHT THEY MAY HAVE TO A TRIAL BY JURY IN RESPECT OF SUCH
CLAIM. THIS PROVISION IS A MATERIAL INDUCEMENT FOR THE PARTIES ENTERING INTO
THIS AGREEMENT.

         11. Multiple Counterparts. This Fifth Amendment may be executed in any
number of counterparts, all of which taken together shall constitute one and the
same agreement, and any of the parties hereto may execute this Fifth Amendment
by signing any such counterpart.

         12. Signatures of Support Parties. By signing below where indicated,
the undersigned Support Parties each (a) acknowledge this Fifth Amendment and
the Credit Agreement as amended hereby; (b) agree with the terms, conditions and
amendments contained in this Fifth Amendment and the Credit Agreement as amended

<PAGE>

hereby as they relate to the Support Agreement, including without limitation,
the amended definition of "Termination Date" as set forth in this Fifth
Amendment; (c) agree that the Support Agreement shall be deemed amended wherever
necessary in order to continue the obligations of the undersigned Support
Parties contained in the Support Agreement and conform to the changes reflected
in this Fifth Amendment; and (d) confirm their continuing obligations under the
Support Agreement, as amended hereby, which shall continue in full force and
effect as contemplated therein and herein, until the Obligation has been paid in
full and Lender shall have no further commitment or obligation whatsoever to or
in favor of Borrower.

                  [remainder of page intentionally left blank]

<PAGE>

THE CREDIT AGREEMENT AND THE SUPPORT AGREEMENT, AS EACH IS AMENDED BY THIS FIFTH
AMENDMENT, AND THE OTHER LOAN PAPERS REPRESENT THE FINAL AGREEMENT BETWEEN THE
PARTIES AND MAY NOT BE CONTRADICTED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS, OR
SUBSEQUENT ORAL AGREEMENTS OF THE PARTIES. THERE ARE NO UNWRITTEN ORAL
AGREEMENTS BETWEEN THE PARTIES.

IN WITNESS WHEREOF, the parties hereto have caused this Fifth Amendment to be
executed to be effective as of the date and year first above written.

LENDER:
BANK OF AMERICA, N.A.
By:
   -------------------------------------------
Cary C. Conwell, Senior Vice President

BORROWER:
CRESCENT OPERATING, INC., a Delaware corporation
By:
   -------------------------------------------
Jeffrey L. Stevens, President
and Chief Executive Officer

SUPPORT PARTIES:

----------------------------------------------
RICHARD E. RAINWATER

----------------------------------------------
JOHN GOFF

<PAGE>

                                 Promissory Note

Date December 31, 2001                        [ ] New [X] Modification/Extension

Amount $15,000,000.00                         Maturity Date August 15, 2002

Bank:
Bank of America, N.A.
Private Banking Dept.
500 West Seventh Street, 13th Floor
Fort Worth, TX 76102

Borrower:
Crescent Operating, Inc.
777 Taylor Street, Suite 1050
Fort Worth, TX 76102

FOR VALUE RECEIVED, the undersigned Borrower unconditionally (and jointly and
severally, if more than one) promises to pay to the order of Bank, its
successors and assigns, without setoff, at its offices indicated at the
beginning of this Note, or at such other place as may be designated by Bank, the
principal amount of Fifteen Million and No/ 100 Dollars ($15,000,000.00), in
immediately available funds, together with interest computed daily on the
outstanding principal balance hereunder, at an annual interest rate, and in
accordance with the payment schedule, indicated below.

[This Note contains some provisions preceded by boxes. If a box is marked, the
provision applies to this transaction; if it is not marked, the provision does
not apply to this transaction.]

1. Rate.

         The Rate shall be the rate of interest publicly announced from time to
time by the Bank as its Prime Rate (the "Index"), plus zero percent (0.00%) per
annum. The Prime Rate is set by the Bank based on various factors, including the
Bank's costs and desired return, general economic conditions and other factors,
and is used as a reference point for pricing some loans. The Bank may price
loans to its customers at, above, or below the Prime Rate. Any change in the
Prime Rate shall take effect at the opening of business on the day specified in
the public announcement of a change in the Bank's Prime Rate. The Index is not
necessarily the lowest rate charged by Bank on its loans and is set by Bank in
its sole discretion. If the Index becomes unavailable during the term of this
loan, Bank may designate a substitute index after notifying Borrower. Bank will
tell Borrower the current Index rate upon Borrower's request. Interest will
accrue on any non-business day at the rate in effect on the immediately
preceding business day.

         Notwithstanding any provision of this Note, Bank does not intend to
charge and Borrower shall not be required to pay any amount of interest or other
charges in excess of the maximum permitted by applicable law. Borrower agrees
that during the full term hereof, the maximum lawful interest rate for this Note
as determined under Texas law shall be the indicated rate ceiling as specified
in Article 5069-1.04 of VATS. Further, to the extent that any other lawful rate
ceiling exceeds the rate ceiling so determined then the higher rate ceiling
shall apply. Any payment in excess of such maximum shall be refunded to Borrower
or credited against principal, at the option of Bank.

2. Accrual Method. Unless otherwise indicated, interest at the Rate set forth
above will be calculated by the 365/360 day method (a daily amount of interest
is computed for a hypothetical year of 360 days; that amount is multiplied by
the actual number of days for which any principal is outstanding hereunder).

3. Rate Change Date. Any Rate based on a fluctuating index or base rate will
change, unless otherwise provided, each time and as of the date that the index
or base rate changes. In the event any index is discontinued, Bank shall
substitute an index determined by Bank to be comparable, in its sole discretion.

<PAGE>

4. Payment Schedule. All payments received hereunder shall be applied first to
the payment of any expense or charges payable hereunder or under any other loan
documents executed in connection with this Note, then to interest due and
payable, with the balance applied to principal, or in such other order as Bank
shall determine at its option.

         Single Principal Payment. Principal shall be paid in full in a single
payment on August 15, 2002. Interest thereon shall be paid monthly, commencing
on February 28, 2002, and continuing on the last day of each successive month
thereafter, with a final payment of all unpaid interest at the stated maturity
of this Note.

5. Credit Agreement. THIS NOTE EVIDENCES A MODIFICATION AND EXTENSION OF THAT
CERTAIN PROMISSORY NOTE DATED NOVEMBER 27, 2001 IN THE FACE PRINCIPAL AMOUNT OF
$15,000,000.00 EXECUTED BY BORROWER AND PAYABLE TO THE ORDER OF BANK, AND IS THE
"MODIFICATION NOTE" REFERRED TO IN THE FIFTH AMENDMENT TO CREDIT AGREEMENT DATED
EFFECTIVE AS OF THE DATE HEREOF AND REFERRED TO BELOW. REFERENCE IS MADE TO THAT
CERTAIN CREDIT AGREEMENT DATED AS OF AUGUST 27, 1997, BY, AMONG OTHERS, BORROWER
AND BANK, AS AMENDED BY FIRST AMENDMENT THERETO DATED EFFECTIVE AUGUST 27, 1998,
SECOND AMENDMENT THERETO DATED EFFECTIVE AS OF AUGUST 27, 1999, THIRD AMENDMENT
THERETO DATED EFFECTIVE AS OF AUGUST 27, 2001, FOURTH AMENDMENT THERETO DATED
EFFECTIVE AS OF NOVEMBER 27, 2001, AND FIFTH AMENDMENT THERETO DATED EFFECTIVE
AS OF THE DATE HEREOF (AS SO AMENDED, THE "LOAN AGREEMENT"). REFERENCE IS
SPECIFICALLY MADE TO SUCH LOAN AGREEMENT FOR A STATEMENT OF, AMONG OTHER THINGS,
CERTAIN DEFINED TERMS, THE EVENTS UPON WHICH THE MATURITY OF THIS NOTE MAY BE
ACCELERATED, COLLATERAL SECURING PAYMENT OF THIS NOTE AND ADDITIONAL RIGHTS AND
REMEDIES IN FAVOR OF BANK, ALL OF WHICH SHALL BE CUMULATIVE AND NOT EXCLUSIVE OF
ONE ANOTHER. BORROWER ACKNOWLEDGES AND AGREES THAT, NOTWITHSTANDING ANY
PROVISIONS OF THE LOAN AGREEMENT, THIS NOTE OR ANY OF THE LOAN PAPERS AS DEFINED
IN THE LOAN AGREEMENT, OR ANY OTHER DOCUMENTS EXECUTED IN CONNECTION WITH THIS
NOTE, BANK HAS NO OBLIGATION TO MAKE ANY FURTHER ADVANCE OR EXTEND ADDITIONAL
CREDIT WHATSOEVER TO BORROWER, AND, FURTHER, THAT BORROWER SHALL NOT BE ENTITLED
TO REBORROW ANY AMOUNT REPAID HEREUNDER, IT BEING UNDERSTOOD AND AGREED THAT THE
LOAN EVIDENCED HEREBY IS FULLY FUNDED AND EVIDENCES A TERM LOAN AND NOT A
REVOLVING CREDIT FACILITY.

6. Automatic Payment.

[ ] Borrower has elected to authorize Bank to effect payment of sums due under
this Note by means of debiting Borrower's account number ___________________.
This authorization shall not affect the obligation of Borrower to pay such sums
when due, without notice, if there are insufficient funds in such account to
make such payment in full on the due date thereof, or if Bank fails to debit the
account.

7. Waivers, Consents and Covenants. Borrower, any other endorser or guarantor
hereof, or any other party hereto (individually an "Obligor" and collectively
"Obligors") and each of them jointly and severally: (a) waive presentment,
demand, protest, notice of demand, notice of intent to accelerate, notice of
acceleration of maturity, notice of protest, notice of nonpayment, notice of
dishonor, and any other notice required to be given under the law to any Obligor
in connection with the delivery, acceptance, performance, default or enforcement
of this Note, any endorsement or guaranty of this Note, or any other documents
executed in connection with this Note or any other note or other loan documents
previously, now or hereafter executed in connection with any obligation of
Borrower to Bank, including without limitation, the Loan Agreement and the Loan
Papers as defined therein (sometimes collectively referred to in this Note as
the "Loan Documents"); (b) consent to all delays, extensions, renewals or other
modifications of this Note or the Loan Documents, or waivers of any term hereof
or of the Loan Documents, or release or discharge by Bank of any of Obligors, or
release, substitution or exchange of any security for the payment hereof, or the
failure to act on the part of Bank, or any indulgence shown by Bank (without
notice to or further assent from any of Obligors), and agree that no such
action, failure to act or failure to exercise any right or remedy by Bank shall
in any way affect or impair the obligations of any Obligors or be construed as a
waiver by Bank of, or otherwise affect, any of Bank's rights under this Note,
under any endorsement or guaranty of this Note or under any of the Loan
Documents; and (c) agree to pay, on demand, all costs and expenses of collection
or defense of this Note or of any endorsement or guaranty hereof and/or the
enforcement or defense of Bank's rights with respect to, or the administration,
supervision, preservation, or protection of, or realization upon, any property
securing payment hereof, including, without limitation, reasonable attorney's
fees, including fees related to any suit, mediation or arbitration proceeding,
out of court payment agreement, trial, appeal, bankruptcy proceedings or other
proceeding, in such amount as may be determined reasonable by any arbitrator or
court, whichever is applicable.

<PAGE>

8. Prepayments. Prepayments may be made in whole or in part at any time. All
prepayments of principal shall be applied in the inverse order of maturity, or
in such other order as Bank shall determine in its sole discretion. No
prepayment of any other loan shall be permitted without the prior written
consent of Bank. For the purposes of calculating the amounts owed only, it shall
be assumed that Bank actually funded or committed to fund the loan through the
purchase of an underlying deposit in an amount and for a term comparable to the
loan, and such determination by Bank shall be conclusive, absent a manifest
error in computation.

9. Events of Default. The following are events of default hereunder: (a) the
failure to pay or perform any obligation, liability or indebtedness of any
Obligor to Bank, or to any affiliate or subsidiary of Bank of America, whether
under this Note or any Loan Documents after the date hereof, as and when due
(whether upon demand, at maturity or by acceleration) or any other default under
any of the Loan Documents after the date hereof; (b) the failure to pay or
perform any other obligation, liability or indebtedness of any Obligor to any
other party; (c) the death of any Obligor (if an individual); (d) the
resignation or withdrawal of any partner or a material owner/guarantor of
Borrower, as determined by Bank in its sole discretion; (e) the determination by
Bank that any representation or warranty made to Bank by any Obligor in any Loan
Documents or otherwise is or was, when it was made, untrue or materially
misleading; (f) the failure of any Obligor to timely deliver such financial
statements, including tax returns, other statements of condition or other
information, as Bank shall request from time to time; (g) the entry of a
judgment against any Obligor which Bank deems to be of a material nature, in
Bank's sole discretion; (h) the seizure or forfeiture of, or the issuance of any
writ of possession, garnishment or attachment, or any turnover order for any
property of any Obligor; or (i) the failure of Borrower's businessto comply with
any law or regulation controlling its operation.

10. Remedies upon Default. Whenever there is a default under this Note (a) the
entire balance outstanding hereunder and all other obligations of any Obligor to
Bank (however acquired or evidenced) shall, at the option of Bank, become
immediately due and payable, and/or (b) to the extent permitted by law, the Rate
of interest on the unpaid principal shall be increased at Bank's discretion to
the "Default Rate" as defined in the Loan Agreement. The provisions herein for a
Default Rate shall not be deemed to extend the time for any payment hereunder or
to constitute a "grace period" giving Obligors a right to cure any default. At
Bank's option, any accrued and unpaid interest, fees or charges may, for
purposesof computing and accruing interest on a daily basis after the due date
of the Note or any installment thereof, be deemed to be a part of the principal
balance, and interest shall accrue on a daily compounded basis after such date
at the Default Rate provided in this Note until the entire outstanding balance
of principal and interest is paid in full. Upon a default under this Note, Bank
is hereby authorized at any time, at its option and without notice or demand, to
set off and charge against any deposit accounts of any Obligor (as well as any
money, instruments, securities, documents, chattel paper, credits, claims,
demands, income and any other property, rights and interests of any Obligor),
which at any time shall come into the possession or custody or under the control
of Bank or any of its agents, affiliates or correspondents, any and all
obligations due hereunder. Additionally, Bank shall have all rights and remedies
available under each of the Loan Documents, as well as all rights and remedies
available at law or in equity.

11. Non-Waiver. The failure at any time of Bank to exercise any of its options
or any other rights hereunder shall not constitute a waiver thereof, nor shall
it be a bar to the exercise of any of its options or rights at a later date. All
rights and remedies of Bank shall be cumulative and may be pursued singly,
successively or together, at the option of Bank. The acceptance by Bank of any
partial payment shall not constitute a waiver of any default or of any of Bank's
rights under this Note. No waiver of any of its rights hereunder, and no
modification or amendment of this Note, shall be deemed to be made by Bank
unless the same shall be in writing, duly signed on behalf of Bank; each such
waiver shall apply only with respect to the specific instance involved, and
shall in no way impair the rights of Bank or the obligations of Obligors to Bank
in any other respect at any other time.

12. Applicable Law, Venue and Jurisdiction. Borrower agrees that this Note shall
be deemed to have been made in the State of Texas at Bank's address indicated at
the beginning of this Note and shall be governed by, and construed in accordance
with, the laws of the State of Texas and is performable in Fort Worth, Tarrant
County, Texas. In any litigation in connection with or to enforce this Note or
any indorsement or guaranty of this Note or any Loan Documents, Obligors, and
each of them, irrevocably consent to and confer personal jurisdiction on the
courts of the State of Texas or the United States courts located within the
State of Texas.

<PAGE>

Nothing contained herein shall, however, prevent Bank from bringing any action
or exercising any rights within any other state or jurisdiction or from
obtaining personal jurisdiction by any other means available under applicable
law.

13. Partial Invalidity. The unenforceability or invalidity of any provision of
this Note shall not affect the enforceability or validity of any other provision
herein and the invalidity or unenforceability of any provision of this Note or
of the Loan Documents to any person or circumstance shall not affect the
enforceability or validity of such provision as it may apply to other persons or
circumstances.

14. Binding Effect. This Note shall be binding upon and inure to the benefit of
Borrower, Obligors and Bank and their respective successors, assigns, heirs and
personal representatives, provided, however, that no obligations of Borrower or
Obligors hereunder can be assigned without prior written consent of Bank.

15. Controlling Document. To the extent that this Note conflicts with or is in
any way incompatible with any other Loan Documents, this Note shall control over
any other such document, and if this Note does not address an issue, then each
other such document shall control to the extent that it deals most specifically
with an issue.

16. Arbitration and Waiver of Jury Trial.

(a) This Section concerns the resolution of any controversies or claims between
any of Borrower and Bank, whether arising in contract, tort or by statute,
including but not limited to controversies or claims that arise out of or relate
to: (i) this Note, the Loan Agreement or any of the Loan Documents (including
any amendments, renewals, extensions or modifications of any of the foregoing);
or (ii) any document related to this Note, the Loan Agreement or any of the Loan
Documents; (collectively a "Claim").

(b) At the request of any of Borrower or the Bank, any Claim shall be resolved
by binding arbitration in accordance with the Federal Arbitration Act (Title 9,
U. S. Code) (the "Act"). The Act will apply even though this Note provides that
it is governed by the law of a specified state.

(c) Arbitration proceedings will be determined in accordance with the Act, the
applicable rules and procedures for the arbitration of disputes of JAMS or any
successor thereof ("JAMS"), and the terms of this Section. In the event of any
inconsistency, the terms of this paragraph shall control.

(d) The arbitration shall be administered by JAMS and conducted in any U. S.
state where real or tangible personal property collateral for this credit is
located or if there is no such collateral, in the state of Texas. All Claims
shall be determined by one arbitrator; however, if Claims exceed $5,000,000,
upon the request of any party, the Claims shall be decided by three arbitrators.
All arbitration hearings shall commence within 90 days of the demand for
arbitration and close within 90 days of commencement and the award of the
arbitrator(s) shall be issued within 30 days of the close of the hearing.
However, the arbitrator(s), upon a showing of good cause, may extend the
commencement of the hearing for up to an additional 60 days. The arbitrator(s)
shall provide a concise written statement of reasons for the award. The
arbitration award may be submitted to any court having jurisdiction to be
confirmed and enforced.

(e) The arbitrator(s) will have the authority to decide whether any Claim is
barred by the statute of limitations and, if so, to dismiss the arbitration on
that basis. For purposes of the application of the statute of limitations, the
service on JAMS under applicable JAMS rules of a notice of Claim is the
equivalent of the filing of a lawsuit. Any dispute concerning this arbitration
provision or whether a Claim is arbitrable shall be determined by the
arbitrator(s). The arbitrator(s) shall have the power to award legal fees
pursuant to the terms of this Note, the Loan Agreement or any of the Loan
Documents.

(f) This paragraph does not limit the right of any of Borrower or the Bank to:
(i) exercise self-help remedies, such as but not limited to, setoff; (ii)
initiate judicial or nonjudicial foreclosure against any real or personal
property collateral; (iii) exercise any judicial or power of sale rights, or
(iv) act in a court of law to obtain an interim remedy, such as but not limited
to, injunctive relief, writ of possession or appointment of a receiver, or
additional or supplementary remedies.

<PAGE>

(g) The filing of a court action is not intended to constitute a waiver of the
right of any of Borrower or the Bank, including the suing party, thereafter to
require submittal of the Claim to arbitration.

(h) BY AGREEING TO BINDING ARBITRATION, THE PARTIES IRREVOCABLY AND VOLUNTARILY
WAIVE ANY RIGHT THEY MAY HAVE TO A TRIAL BY JURY IN RESPECT OF ANY CLAIM.
FURTHERMORE, WITHOUT INTENDING IN ANY WAY TO LIMIT THIS AGREEMENT TO ARBITRATE,
TO THE EXTENT ANY CLAIM IS NOT ARBITRATED, THE PARTIES IRREVOCABLY AND
VOLUNTARILY WAIVE ANY RIGHT THEY MAY HAVE TO A TRIAL BY JURY IN RESPECT OF SUCH
CLAIM. THIS PROVISION IS A MATERIAL INDUCEMENT FOR THE PARTIES ENTERING INTO
THIS AGREEMENT.

17. NOTICE OF FINAL AGREEMENT:

THIS WRITTEN PROMISSORY NOTE REPRESENTS THE FINAL AGREEMENT BETWEEN THE PARTIES,
AND MAY NOT BE CONTRADICTED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS, OR SUBSEQUENT
ORAL AGREEMENTS OF THE PARTIES. THERE ARE NO UNWRITTEN ORAL AGREEMENTS BETWEEN
THE PARTIES.

Bank:                                         Borrower:
Bank of America, N.A.                         Crescent Operating, Inc.
By:                                           By:
   --------------------------------              ----------------------------
Cary C. Conwell, Sr. Vice President           Jeffery L. Stevens, President
                                              and Chief Executive Officer

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