Document:

<PAGE>   1

                                                                    EXHIBIT 10.1

                              SCHERING CORPORATION

2000 GALLOPING HILL ROAD                                 KENILWORTH, N.J. 07033

                                                              July 27, 2000

Mr. Vaughn M. Kailian, CEO
COR Therapeutics, Inc.
256 East Grand Avenue
South San Francisco, California 94080

Dear Vaughn:

This is with regard to the Collaboration Agreement, dated April 10, 1995, by and
among COR Therapeutics, Inc. ("COR"), and Schering Corporation and
Schering-Plough Ltd. (collectively "Schering"), as amended, (the "Agreement").

In the Second Amendment to the Agreement, dated November 5, 1999, Cor and
Schering agreed to make certain elements of the Second Amendment conditional on
the conduct of a Phase III clinical trial for acute myocardial infarction
("AMI") and have made provision in the Second Amendment for modification of the
Second Amendment based upon the status of such trial as or pre-established
dates, and the Parties desire to modify those dates.

The parties are currently negotiating a Third Amendment to the Agreement to
address this and other issues relating to the Agreement. However, Section X.A of
the Second Amendment provides for the termination of certain provisions of the
Second Amendment in the event that "as of June 30, 2000, the JSC has not voted
to conduct the Phase III Study". Therefore, it is hereby agreed that the
deadline for the decision of the JSC with respect to the conduct of the Phase
III Study is extended until August 31, 2000.

Please indicate COR's acceptance and agreement to the provisions set forth in
this letter by signing below on behalf of COR and returning one signed original
to Schering.

Very truly yours,

Schering Corporation                       Schering-Plough Ltd.

/s/ David Poorvin                         /s/ David Poorvin
-------------------------                -------------------------
David Poorvin                            David Poorvin
Vice President                           Prokurist

Acknowledged and Agreed to:

COR Therapeutics, Inc.

By: /s/ Vaughn M. Kailian
   -----------------------------
        Vaughn M. Kailian
        Chief Executive Officer

 Dated:  7/28/00
       -------------------------<PAGE>   1
                                                                    EXHIBIT 10.2

                  [SCHERING-PLOUGH PHARMACEUTICALS LETTERHEAD]

                                                        August 31, 2000

Mr. Vaughn M. Kailian, CEO
COR Therapeutics, Inc.
256 East Grand Avenue
South San Francisco, California 94080

Dear Vaughn:

This is with regard to the Collaboration Agreement, dated April 10, 1995, by
and among COR Therapeutics, Inc. ("COR"), and Schering Corporation and Schering-
Pough Ltd. (collectively "Schering"), as amended, (the "Agreement").

In the Second Amendment to the Agreement, dated November 5, 1999, COR and
Schering agreed to make certain elements of the Second Amendment conditional on
the conduct of a Phase III clinical trial for acute myocardial infarction
("AMI") and have made provision in the Second Amendment for modification of the
Second Amendment based upon the status of such trial as of pre-established
dates, and the parties desire to modify those dates.

The parties are currently negotiating a Third Amendment to the Agreement to
address this and other issues relating to the Agreement. However, Section X.A
of the Second Amendment provides for the termination of certain provisions of
the Second Amendment in the event that "as of June 30, 2000, the JSC has not
voted to conduct the Phase III Study". Therefore, it is hereby agreed that the
deadline for the decision of the JSC with respect to the conduct of the Phase
III Study is extended until September 8, 2000.

Please indicate COR's acceptance and agreement to the provisions set forth in
this letter by signing below on behalf of COR and returning one signed original
to Schering.

Very truly yours,

Schering Corporation                         Schering-Plough Ltd.

/s/ THOMAS C. LAUDA                          /s/ DAVID POORVIN
-------------------------------              ---------------------------------
Thomas C. Lauda                              David Poorvin
Executive Vice President                     Prokurist
Schering-Plough Pharmaceuticals

Acknowledged and Agreed to:

COR Therapeutics, Inc.

By: /s/ VAUGHN M. KAILIAN
    ---------------------------
    Vaughn M. Kailian
    Chief Executive Officer

Date:         09/05/00
      -------------------------<PAGE>   1

                                                                    EXHIBIT 10.1

                                WAIVER OF DEFAULT

                                       and

                     CONSENT TO AMENDMENT OF BUSINESS PLANS

        This WAIVER OF DEFAULT AND CONSENT TO AMENDMENT OF BUSINESS PLANS (the
"Waiver and Consent") is made as of July 17, 2000 by KRAUSE'S FURNITURE, INC.
(the "Company"), TH LEE.PUTNAM INTERNET PARTNERS, L.P. and TH LEE.PUTNAM
INTERNET PARALLEL PARTNERS, L.P. (collectively, "THLi") and GE CAPITAL EQUITY
INVESTMENTS ("GECC"), with reference to the following facts:

        A. The Company, THLi and GECC are parties to a Series A Convertible
Preferred Stock Purchase Agreement dated as of January 11, 2000 (the "Purchase
Agreement"), and parties to an Amended and Restated Stockholders Agreement among
themselves, certain other stockholders of the Company, and the Company dated as
of January 14, 2000 (the "Stockholders Agreement").

        B. Capitalized terms used but not defined herein shall have the same
meanings ascribed to them in the Purchase Agreement.

        C. Section 6.1 of the Purchase Agreement and Schedule 6.1 thereto
provide that, unless consented to by THLi, it shall be an Event of Default for
the Company to deviate from the E-Commerce Plan, and that in the absence of the
consent of THLi, the failure to use at least $10,000,000 of the Proceeds of the
sale of Series A Convertible Preferred Stock (the "Proceeds") for E-Commerce
Proceeds Uses during the term of the E-Commerce Plan shall constitute such a
deviation and Event of Default.

        D. Section 2.2(p) of the Stockholders Agreement provides that the THLi
Designee and GECC Designee on the Board of Directors must consent to any waiver
or modification of the terms or performance of the Purchase Agreement and
Stockholders Agreement, and Section 2.2(u) of the Stockholders' Agreement
provides that the THLi Designee and GECC Designee must consent to any amendment
of an annual business plan.

        E. Because circumstances in the markets have changed since the date of
the Purchase Agreement, the Company, THLi and GECC have determined that it is in
the best interest of the Company, its stockholders and the holders of Series A
Convertible Preferred Stock to re-allocate the investment of the direct Proceeds
to permit the Company to use an additional $2,500,000 of such Proceeds for
Retail Proceeds Uses, deferring any obligation to invest such Proceeds in
E-Commerce Proceeds Uses.

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

        1. To the extent set forth herein, THLi and GECC hereby waive any right
or remedy arising from an Event of Default under Section 6.1 or Schedule 6.1 of
the Purchase Agreement resulting from the Company's use of less than
$10,000,0000 of the Proceeds for E-Commerce Proceeds Uses, so long as the
Company uses at least $7,500,000 of the Proceeds for E-Commerce Proceeds Uses
during the term of the E-Commerce Plan. This Waiver and Consent does not
constitute a waiver of THLi's or GECC's right to assert an Event of Default if
the Company uses less than $7,500,000 of the Proceeds for E-Commerce Proceeds
Uses during the term of the E-Commerce Plan and to assert related rights or
remedies as to the proportion of the $7,500,000 amount that is not spent on
E-Commerce Proceeds Uses.

                                       1

<PAGE>   2

        2. THLi and GECC hereby consent to the amendment of the E-Commerce Plan
and the Retail Plan to reallocate $2,500,000 from E-Commerce Proceeds Uses to
Retail Proceeds Uses, reducing the Proceeds to be invested in E-Commerce
Proceeds Uses and increasing the Proceeds to be invested in Retail Proceeds Uses
by the same $2,500,000, respectively, and THLi, in accordance with Schedule 6.1
of the Purchase Agreement consents to the deviation from the E-Commerce Plan
described above. Further THLi and GECC consent and agree that, from and after
the date hereof (a) the Purchase Agreement shall be modified to provide that (i)
the minimum amount of Proceeds required to be spent on E-Commerce Proceeds Uses
as provided in Schedule 6.1 of the Purchase Agreement shall be $7,500,000, and
(ii) each of the terms "E-Commerce Plan", "E-Commerce Proceeds", "Retail Plan"
and "Retail Proceeds" as used and referenced in the Purchase Agreement, shall
refer to such terms as defined therein and as modified to reflect the
reallocation of Proceeds approved herein, and (b) the Company's business plans
approved by the Board shall be modified in accordance with the foregoing.

        3. Subject to the obligations of the Company or any of its subsidiaries
under any agreement related to indebtedness, the Company agrees that it will
invest in E-Commerce Proceeds Uses, or cause its subsidiaries to invest in
E-Commerce Proceeds Uses, the first $2,500,000 of the net cash (or net cash
equivalent) proceeds resulting from Extraordinary Transactions (as defined
below). An "Extraordinary Transaction" shall be (i) a sale, lease, transfer or
conveyance of an asset or assets of the Company or any of its subsidiaries other
than the sale of furniture, accessories or related inventory in the ordinary
course of business or the subleasing of vacant retail space on arm's-length
terms; (ii) a sale of debt or equity securities (not including a note evidencing
borrowing from a bank or institutional lender), or (iii) new indebtedness of the
Company or its subsidiaries (other than indebtedness between the Company and its
subsidiaries). The Company's currently contemplated sale of a retail site in
Scottsdale, Arizona shall not be deemed an Extraordinary Transaction.

        4. The Company affirms its obligations under the Purchase Agreement
except as expressly modified herein.

        5. This Waiver and Consent may be executed in any number of
counterparts, each of which shall be an original, but all of which together
shall constitute one instrument.

                      [the next page is the signature page]

                                       2

<PAGE>   3

        IN WITNESS WHEREOF, the parties hereto have executed this Waiver and
Consent as of the date first written above.

                                         KRAUSE'S FURNITURE, INC.

                                         /s/ Robert A. Burton
                                         ---------------------------------------
                                         Name:  Robert A. Burton
                                         Title: Executive Vice President and
                                                Chief Financial Officer

                                         TH LEE.PUTNAM INTERNET PARTNERS, L.P.

                                         By: TH LEE.PUTNAM INTERNET FUND
                                             ADVISORS, L.P., its General Partner

                                         By: TH LEE.PUTNAM INTERNET FUND
                                             ADVISORS, LLC, its General Partner

                                         By: /s/ Christine Kim
                                             -----------------------------------
                                             Name:  Christine Kim
                                             Title: Vice President

                                         TH LEE.PUTNAM INTERNET PARALLEL
                                         PARTNERS, L.P.

                                         By: TH LEE.PUTNAM INTERNET FUND
                                             ADVISORS, L.P., its General Partner

                                         By: TH LEE.PUTNAM INTERNET FUND
                                             ADVISORS, LLC, its General Partner

                                         By: /s/ Christine Kim
                                             -----------------------------------
                                             Name:  Christine Kim
                                             Title: Vice President

                                         GE CAPITAL EQUITY INVESTMENTS, INC.

                                         By: /s/ Brian P. Keil
                                             -----------------------------------
                                         Name: Brian P. Keil
                                         Title: Vice President

                                       3

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00016-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00016-of-00352.parquet"}], [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00016-of-00352.parquet"}]]