As filed with the Securities and Exchange Commission on October 5, 2007

                                                       Registration No. 33-70852
- --------------------------------------------------------------------------------


                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                        POST-EFFECTIVE AMENDMENT NO. 1 TO
                                    FORM S-8
                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933

                              COMPUWARE CORPORATION
             (Exact Name of Registrant as Specified in Its Charter)

               Michigan                                  38-2007430
    (State or Other Jurisdiction of                   (I.R.S. Employer
     Incorporation or Organization)                   Identification No.)


                One Campus Martius, Detroit, Michigan 48226-5099
                                 (313) 227-7300
    (Address, including zip code, and telephone number, including area code,
                        of principal executive offices)

            Compuware Corporation 1991 Stock Option Plan (ECOSYSTEMS)
            Compuware Corporation 1992 Stock Option Plan (ECOSYSTEMS)
           Compuware Corporation Stock Option Agreements, Acknowledged
                        by Letters Dated October 20, 1993
                            (Full Title of the Plan)

                             Thomas M. Costello, Jr.
              Senior Vice President, General Counsel and Secretary
                               One Campus Martius
                             Detroit, MI 48226-5099
                                 (313) 227-7300
          (Name and address, including zip code, and telephone number,
                   including area code, of agent for service)


                                EXPLANATORY NOTE

Compuware  Corporation (the "Registrant") has filed  Registration  Statement No.
33-70852  covering 669,776 shares (adjusted to reflect  subsequent stock splits)
of its common stock (the  "Registered  Shares") for issuance under the Compuware
Corporation 1991 Stock Option Plan  (ECOSYSTEMS)  and the Compuware  Corporation
1992 Stock Option Plan  (ECOSYSTEMS)  (the "Terminated  Plans").  The Registrant
does not intend to make further grants under the Terminated  Plans and there are
no options  outstanding under the Terminated Plans. As a result,  the Registrant
now desires to discontinue the registration of the remaining  64,328  Registered
Shares covered by Registration Statement No. 33-70852 relating to the Terminated
Plans,   and  is  filing  this   Post-Effective   Amendment  for  such  purpose.
Registration Statement No. 33-70852 also registered shares for issuance pursuant
to Compuware Corporation Stock Option Agreements,  Acknowledged by Letters Dated
October  20,  1993,  which are not  being  deregistered  by this  Post-Effective
Amendment.

                                   SIGNATURES

Pursuant to the  requirements  of the  Securities  Act of 1933,  the  Registrant
certifies  that it has  reasonable  grounds to believe  that it meets all of the
requirements for filing this Post-Effective  Amendment No. 1 on Form S-8 and has
duly caused this Post-Effective  Amendment No. 1 to Registration Statement to be
signed on its behalf by the undersigned,  thereunto duly authorized, in the City
of Detroit, State of Michigan on October 5, 2007.

                                   COMPUWARE CORPORATION

                               By: /s/ Laura L. Fournier
                                       ----------------------
                                       Laura L. Fournier
                                       Senior Vice President, Chief Financial
                                       Officer and Treasurer


      Pursuant  to  the  requirements  of  the  Securities  Act  of  1933,  this
Post-Effective  Amendment No. 1 to Registration Statement has been signed by the
following persons in the capacities indicated on October 5, 2007.

         Signature                                           Title
- --------------------------------------------------------------------------------
    /s/ Peter Karmanos, Jr.             Chairman of the Board, Chief Executive
    ----------------------------        Officer and Director (principal
    Peter Karmanos, Jr.                 executive officer)


    /s/ Laura L. Fournier               Senior Vice President, Chief Financial
    ---------------------------         Officer and Treasurer (principal
    Laura L. Fournier                   financial officer and principal
                                        accounting officer)

    /s/ Dennis W. Archer                Director
    ---------------------------
    Dennis W. Archer




    ----------------------------
    Gurminder S. Bedi                   Director


    /s/ William O. Grabe
    ----------------------------
    William O. Grabe                    Director


    /s/ William R. Halling
    ----------------------------
    William R. Halling                  Director


    /s/ Faye Alexander Nelson
    ----------------------------
    Faye Alexander Nelson               Director


    /s/ Glenda D. Price
    ----------------------------
    Glenda D. Price                     Director


    /s/ W. James Prowse
    ----------------------------
    W. James Prowse                     Director


    /s/ G. Scott Romney
    ----------------------------
    G. Scott Romney                     Director