Document:

Exhibit 10.1

September 9, 1999

Mr. G. Walter Loewenbaum, Chairman of the Board
Mr. Arthur B. Sims, Director
Mr. Charles W. Hull, Director
3D Systems Corporation
26081 Avenue Hall
Valencia, CA 91355

Dear Messrs. Loewenbaum, Sims, & Hull:

RE:      RETAINER AGREEMENT BETWEEN REGENT PACIFIC MANAGEMENT CORPORATION AND
         3D SYSTEMS CORPORATION

I am writing this letter, pursuant to your request, to set forth the terms and
conditions upon which Regent Pacific Management Corporation, a California
corporation ("Regent Pacific"), will be engaged to perform certain management
services for 3D Systems Corporation, a Delaware corporation, and its wholly
owned and controlled subsidiaries (collectively, "3D Systems"), under certain
guarantees and indemnities to be provided by 3D Systems. This agreement is
contingent upon and subject to 3D Systems' having Directors and Officers
insurance coverage and adding Gary Sbona and Brian Service, as well as other
Regent Pacific personnel, as necessary, to the coverage.

Included within these services will be the following work product, which Regent
Pacific will supply to 3D Systems in accordance with the terms of this letter
and for the agreed-upon cash payments required by this letter:

1.       Regent Pacific agrees to provide a team consisting of four full-time
         equivalents ("FTEs"), to immediately assume the chief executive and
         general management responsibilities of 3D Systems, and to develop and
         implement a restructuring plan for 3D Systems. The goal of this
         assignment shall be to control the immediate situation and redirect the
         company with respect to the potential financial and operational
         restructuring of the ongoing business of 3D Systems.

2.       Regent Pacific shall provide the services of Brian K. Service,
         Principal, of Regent Pacific Management Corporation, who shall be a
         part of the team and lead the engagement on behalf of Regent Pacific as
         the board-appointed President and Chief Executive Officer of 3D Systems
         and Gary J. Sbona, President & Chief Executive Officer of Regent
         Pacific shall be appointed to the Board of Directors of 3D Systems.
         Regent Pacific shall be appointed by the Board of Directors to provide
         general management services to 3D Systems. Both Regent Pacific and Mr.
         Service shall report to the Board of Directors of 3D Systems and shall
         be solely accountable to the Board for fulfilling the obligations of
         this engagement.

<PAGE>

Regent Pacific's services do not include the following activities and/or work
product:

     1.       With the exception of Brian K. Service and Gary J. Sbona,
              Regent Pacific personnel provided under the terms of this
              engagement shall not be appointed officers of 3D Systems, and
              shall not accept nor be held accountable for the fiduciary
              obligations of an officer or director of 3D Systems.

     2.       Discussions by any Regent Pacific personnel with stock analysts,
              current investors or potential investors, unless previously
              approved by the Chairman.

     Regent Pacific is prepared to begin our services next week on Monday,
September 13, 1999, contingent upon:

     1.       This duly executed retainer agreement on the part of 3D Systems;

     2.       The transfer of and receipt by Regent Pacific of the required
              initial payments of this retainer agreement;

     3.       Duly executed  indemnification  agreement  between 3D Systems and
              Mr. Service and Mr. Sbona and 3D Systems and Regent Pacific in a
              form acceptable to Regent Pacific.

     In addition to Mr. Service, the initial team assigned will be H. Michael
Hogan, Earl C. Royse, and a marketing/sales executive to be named within ten (10
days), Principals of Regent Pacific. You understand that Regent Pacific retains
the right to assign or interchange these people with other people as the work
progresses, subject to 3D Systems' right of approval, which shall not be
unreasonably withheld, in order to address your requirements, as long as the fee
paid for our services is not increased for the included work product.

Fees: We have agreed to provide the work product included in this agreement for
a period of twelve months, including twenty-six (26) weeks of non-cancelable
services. This service shall be $12,500 per FTE per week payable in four (4)
week increments, each to be paid in advance of each Regent Pacific standard
four-week billing period. The maximum payment for four FTEs shall be $50,000 per
week. It is agreed and understood between us that the payments of such cash fees
are to be made immediately preceding the start of each four-week billing period,
and that failure to pay such periodic payments when due shall constitute a
breach of this agreement by 3D Systems. It is further understood that Regent
Pacific's fees are to be paid in advance of the work to be performed, and that
the initial payment is to be paid on or before the agreed-upon start date. It is
further agreed that such cash payments are earned upon provision of the agreed
upon services by Regent Pacific.

Term of agreement: The term of this agreement shall be for twelve (12) months,
with a right of cancellation by 3D Systems after twenty six (26) weeks, unless
earlier terminated in accordance with this paragraph. Regent Pacific hereby
commits the availability of its resources to 3D Systems under this agreement for
the full twelve (12) month term of the engagement. 3D

<PAGE>

Systems may discharge Regent Pacific (i) for any material breach of this
agreement, or (ii) at any time after the non-cancelable period provided that 3D
Systems had delivered 60-day written notice of intent to cancel this agreement.
Regent Pacific may withdraw from this assignment at any time with 3D Systems'
consent or for good cause without 3D Systems' consent. Good cause includes 3D
Systems' breach of this agreement (including 3D Systems' failure to pay any
invoice within five working days of presentation), or any fact or circumstance
that would render our continuing participation in the assignment unethical or
unlawful.

Expense reimbursement: In addition to the fees, any requests for compensation
will also include certain charges for reasonable costs and expenses. Such costs
and expenses will include, among others, charges for messenger services, air
couriers, travel (coach class, if by air) and living expenses, postage, long
distance telephone, legal advice, and other charges customarily invoiced by
professional firms for reimbursement of out-of-pocket expenses. Said expenses
shall not include any extraordinary expenses or any expenses, which do not
conform to 3D Systems', travel and expense policies, without prior approval by
3D Systems' Chairman. In addition, such expenses shall not include meal expenses
except when Regent Pacific professionals are engaged in business-related
activities and company travel. Regent Pacific will periodically present invoices
to 3D Systems for reimbursement of such charges, and 3D Systems agrees to pay
such invoices within five (5) working days of presentation.

We will provide regular progress reviews to 3D Systems and its Board of
Directors at approximately biweekly intervals, as the work progresses. These
progress reviews will include a discussion of the alternatives available to 3D
Systems, and the performance of the company relative to the restructuring of the
ongoing business. In addition, Regent Pacific requires, and 3D Systems agrees,
that the Board of Directors of 3D Systems will be available to Regent Pacific on
a reasonable consultation and communication basis and will meet with Regent
Pacific in person in regularly scheduled monthly board meetings to review the
status of the engagement.

Because of the breadth and nature of our practice, from time to time our firm
may work for one client whose interest may be opposed to that of another client,
for which we work in an unrelated matter. Please be assured that, despite any
potential difference in the interests of our clients, we strictly preserve all
client confidences and zealously pursue the interests of each of our clients. 3D
Systems agrees that it does not consider such concurrent work in unrelated
matters of 3D Systems and any other client of Regent Pacific to be
inappropriate, and therefore waives any objections to any such present or future
concurrent assignments provided, however, that such waiver shall not apply (i)
to any willful misconduct or breach of confidentiality obligations of Regent
Pacific hereunder, or (ii) to work for any client that is a direct competitor of
3D Systems, unless previously approved.

Except in the case of willful misconduct or gross negligence, 3D Systems shall
indemnify, defend, and hold Regent Pacific, its officers, directors, principals,
associates, affiliates, employees, agents, and counsel, harmless against any
damages, costs, fines, penalties, liabilities, attorneys' and other professional
fees and disbursements, suffered, incurred by, or asserted against, Regent
Pacific, its officers, directors, principals, associates, affiliates, employees,
agents, and/or counsel, including any amounts incurred or paid in settlement or
any judgment of any action, suit, or proceeding brought under any statute, at
common law, or otherwise, which arises under or in connection with the
performance by Regent Pacific of services pursuant to this

<PAGE>

agreement and any amendment or modification thereto. The obligations of 3D
Systems under this paragraph are hereinafter collectively referred to as
"Indemnity Obligations." The Indemnity Obligations shall survive, for a period
of five (5) years, any termination of Regent Pacific's services under this
agreement and any amendment or modification thereto. 3D Systems agrees to
promptly tender any payments due to Regent Pacific, its officers, directors,
principals, associates, affiliates, employees, agents, and/or counsel, under or
in respect of the Indemnity Obligations, within three (3) business days
following written demand by Regent Pacific, its officers, directors, principals,
associates, affiliates, employees, agents, and/or counsel. 3D Systems' Indemnity
Obligations shall not apply to amounts paid in settlement of any loss, claim,
damage, liability, or action if such settlement is effected without the consent
of 3D Systems, which consent shall not be unreasonably withheld.

This agreement is made under the laws of the State of California. If any legal
action arises under this Agreement or by reason of an asserted breach of it, the
prevailing party shall be entitled to recover all costs and expenses, including
reasonable attorney's fees, incurred in enforcing or attempting to enforce the
terms of this agreement.

Non-solicitation: In recognition of the fact that the Regent Pacific individuals
that we provide to 3D Systems under this agreement may perform similar services
from time to time for others, this agreement shall not prevent Regent Pacific
from performing such similar services or restrict Regent Pacific from using such
individuals. The parties agree that they shall not, except by mutual agreement
between the parties, during the term of this agreement nor for a period of three
(3) years after its termination, solicit for employment nor employ, whether as
employee or independent contractor or agent, any person who is an employee or
independent contractor of the other. It is agreed that in the event of a breach
of this paragraph, it would be impractical or extremely difficult to fix actual
damages and, therefore, Regent Pacific and 3D Systems agree that either party in
breach of this paragraph shall pay to the other $350,000 per individual
solicited or employed as employee, independent contractor or agent, as
Liquidated Damages and not as a penalty, which is agreed by Regent Pacific and
3D Systems to represent reasonable compensation for the foreseeable loss that
will, in all likelihood, be incurred because of such breach.

This Retainer Agreement and the Nondisclosure Agreement between the parties,
dated August 24, 1999, constitute the entire understanding between Regent
Pacific and 3D Systems regarding our services. Further, these agreements
supersede and replace any prior agreement(s) between the parties. By executing
this agreement you acknowledge that you have read it carefully and understand
all of its terms. This agreement cannot be modified except by further written
agreement signed by each party.

If you have any questions about the foregoing, please call me. If 3D Systems is
in agreement with the foregoing, and it accurately represents your understanding
of the agreement between 3D Systems and our firm, please approve the enclosed
copy of this letter, and return the approved copy to me, along the first four
(4) week service fee of $200,000. Said payments may be wire-transferred to the
account of Regent Pacific Management Corporation at Comerica Bank, 333 West
Santa Clara Street, San Jose, CA 95113, Account #__________, Routing number
____________. Our contact there is Anne Osborn at ___________. If there are any
questions with regard to the terms set forth herein, kindly contact me
immediately. In order to maintain

<PAGE>

continuity in scheduling of our resources, we ask that we receive your
affirmative response as soon as possible. In any event, this offer to provide
our services will expire on September 15, 1999, unless accepted by you prior to
that date or extended in writing by an officer of Regent Pacific. Please
understand that we can assume no responsibility in connection with the services
to be provided under this agreement until the signed copy has been returned and
the required funds as agreed to by us have been received.

Very truly yours,

REGENT PACIFIC MANAGEMENT CORPORATION

Gary J. Sbona
President and Chief Executive Officer

THE FOREGOING IS HEREBY APPROVED AND AGREED TO:

DATED: September 9, 1999

3D SYSTEMS CORPORATION
(Signifies full agreement with all terms and conditions)

BY: _________________________________________
    Name: G. Walter Loewenbaum  Title: Director

BY: _________________________________________
    Name: Arthur B. Sims  Title: Chairman & CEO

BY:__________________________________________
    Name: Charles W. Hull    Title: Director<PAGE>

   NUMBER                            BLAZE                                SHARES
   BLZ                             SOFTWARE
COMMON STOCK
             INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE
                                       SEE REVERSE FOR CERTAIN DEFINITIONS AND A
                                       STATEMENT AS TO THE RIGHTS, PREFERENCES,
                                         PRIVILEGES AND RESTRICTIONS OF SHARES

THIS CERTIFIES THAT                                         CUSIP 09347T   10  9

IS THE OWNER OF

 FULLY PAID AND NON-ASSESSABLE SHARES OF THE COMMON STOCK, PAR VALUE $.0001 PER
                                   SHARE OF
                             BLAZE SOFTWARE, INC.
transferable on the books of the Corporation by the holder hereof in person or
by duly authorized attorney upon surrender of this Certificate properly
endorsed.  This Certificate is not valid until countersigned and registered by
the Transfer Agent and Registrar.
     WITNESS the facsimile seal of the Corporation and the facsimile signatures
of its duly authorized officers.
Dated:

          /s/ Gary Shroyer                       /s/ Thomas F. Kelly

          CHIEF FINANCIAL OFFICER                PRESIDENT AND CHIEF EXECUTIVE
          AND SECRETARY                          OFFICER

                             BLAZE SOFTWARE, INC.
                                   CORPORATE
                                    [SEAL]
                                 DEC. 30, 1999
                                   DELAWARE

                          COUNTERSIGNED AND REGISTERED:
                                    NORWEST BANK MINNESOTA, N.A.
                                                    TRANSFER AGENT AND REGISTRAR

                          BY

                                                            AUTHORIZED SIGNATURE
<PAGE>

                              BLAZE SOFTWARE, INC

     A statement of the powers, designations, preferences and relative,
participating, optional or other special rights of each class of stock or series
thereof and the qualifications, limitations or restrictions of such preferences
and/or rights as established, from time to time, by the Certificate of
Incorporation of the Corporation and by any certificate of determination, the
number of shares constituting each class and series, and the designations
thereof, may be obtained by the holder hereof upon request and without charge at
the principal office of the Corporation.

     The following abbreviations, when used in the inscription on the face of
this certificate, shall be construed as though they were written out in full
according to applicable laws or regulations:

<TABLE>
<S>                                                            <C>                          <C>

TEN COM   --  as tenants in common                            UNIF GIFT MIN -                Custodian
TEN ENT   --  as tenants by the entireties                                    --------------          --------------
JT TEN    --  as joint tenants with right of                                  (Cust)                  (Minor)
              survivorship and not as tenants                                 under Uniform Gifts to Minors
              in common                                                       Act
                                                                              ------------------------------------
                                                                                            (State)
                                                           UNIF TRF MIN ACT -                Custodian (Until age       )
                                                                              ---------------                    -------
                                                                                (Cust)

                                                                                             under/Uniform Transfers
                                                                               --------------
                                                                                (Minor)
                                                                              to Minors Act
                                                                                           ---------------------------
                                                                                                     (State)
</TABLE>

   Additional abbreviations may also be used though not in the above list.

   FOR VALUE RECEIVED,                    hereby sell, assign and transfer unto

PLEASE INSERT SOCIAL SECURITY OR OTHER
    IDENTIFYING NUMBER OF ASSIGNEE
----------------------------------

----------------------------------

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  (PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING ZIP CODE, OF ASSIGNEE)

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                                                                         Shares
-------------------------------------------------------------------------
of the common stock represented by the within Certificate, and do hereby
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irrevocably constitute and appoint
                                                                      Attorney
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to transfer the said stock on the books of the within named Corporation with

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full power of substitution in the premises.

Dated
     ---------------------------

                                         --------------------------------------
                                         THE SIGNATURE(S) TO THIS ASSIGNMENT
                                         MUST CORRESPOND WITH THE NAME(S) AS
                                         WRITTEN UPON THE FACE OF THE
                                         CERTIFICATE EVERY PARTICULAR, WITHOUT
                                         ALTERATION OR ENLARGEMENT OR ANY
                                         CHANGE WHATEVER.

Signature(s) Guaranteed

By
THE SIGNATURE(S) SHOULD BE GUARANTEED BY AN ELIGIBLE GUARANTOR INSTITUTION
(BANKS, STOCKBROKERS, SAVINGS AND LOAN ASSOCIATIONS OR CREDIT UNIONS WITH
MEMBERSHIP IN AN APPROVED SIGNATURE GUARANTEE MEDALLION PROGRAM, PURSUANT
TO S.E.C. RULE 17Ad-15.

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