Error installing D2 dar file

[INFO] ******************************************************
[INFO] * DAR Installer
[INFO] * Version:        6.7.0000.0231
[INFO] * Java version:   1.6.0_27
[INFO] * Set storage type: false
[INFO] *
[INFO] * DAR file:       C:\Program Files\C6\D2\docapp_dar\D2-DAR.dar
[INFO] * Project name:   D2-DAR
[INFO] * Built by Composer: 6.7.0000.0231
[INFO] *
[INFO] * Repository:     helloworld
[INFO] * Server version: 6.5.0.322 SP3 Win32.SQLServer
[INFO] * User name:      dmadmin
[INFO] ******************************************************
[INFO] Install started...  Tue Jun 12 10:26:31 IST 2012
[INFO] Executing pre-install script
[INFO] dmbasic.exe output : Connected to the server as dmadmin.
[INFO] dmbasic.exe output : Redirecting mail_method to  : D2EventSenderMailMethod
[INFO] dmbasic.exe output : Updated object(s):1
[INFO] dmbasic.exe output : Docbase must be restarted.
[INFO] dmbasic.exe output : Creating d2_mail_manager
[INFO] dmbasic.exe output : d2_mail_manager already created.
[INFO] dmbasic.exe output : Creating d2_pseudo_user
[INFO] dmbasic.exe output : d2_pseudo_user already created.
[INFO] dmbasic.exe output : Creating d2_docbase_update
[INFO] dmbasic.exe output : d2_update_docbase_queue already created.
[INFO] dmbasic.exe output : Create/modify ACL : d2_acl_public
[INFO] dmbasic.exe output : ACL found :4501b20780000503
[INFO] dmbasic.exe output : ERROR: Error create/modify ACL : d2_acl_public
[INFO] dmbasic.exe output : [DM_ACL_E_USER_NOT_EXIST]error:  "The owner_name or accessor_name 'admingroup' given in the ACL 'd2_acl_public' does not exist."
[INFO] dmbasic.exe output :
[INFO] dmbasic.exe output :
[INFO] dmbasic.exe output : Exiting with dmExit(-1)
[ERROR] Procedure execution failed with dmbasic.exe exit value : -1
[INFO] D2-DAR install failed.
[ERROR] com.emc.ide.logger.defaultimpl.DmLoggerDefault::getDefaultThrowableMessage (line 100)
com.emc.ide.installer.PreInstallException: Error running pre-install procedure "PreInstall". Please contact the procedure owner to verify if it is functioning properly.
at internal.com.emc.ide.installer.DarInstaller.preInstall(DarInstaller.java:1085)
at internal.com.emc.ide.installer.DarInstaller.doInstall(DarInstaller.java:495)
at internal.com.emc.ide.installer.DarInstaller.doInstall(DarInstaller.java:334)
at internal.com.emc.ide.installer.DarInstaller.doInstall(DarInstaller.java:303)
at com.emc.ide.installer.darinstaller.StandaloneDarInstallerHelper.doInPlaceInstall(StandaloneDarInstallerHelper.java:133)
at com.emc.ide.installer.darinstaller.StandaloneDarInstaller.installDar(StandaloneDarInstaller.java:348)
at com.emc.ide.installer.darinstaller.StandaloneDarInstaller.install(StandaloneDarInstaller.java:112)
at com.emc.ide.installer.darinstaller.ui.DarInstallerComposite$26.run(DarInstallerComposite.java:1537)
at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:121)
Caused by: com.emc.ide.external.dfc.procedurerunner.ProcedureRunnerException: Procedure execution failed with dmbasic.exe exit value : -1
at com.emc.ide.external.dfc.procedurerunner.ProcedureRunnerUtils.executeDmBasic(ProcedureRunnerUtils.java:263)
at com.emc.ide.external.dfc.procedurerunner.ProcedureRunner.execute(ProcedureRunner.java:55)
at internal.com.emc.ide.installer.DarInstaller.preInstall(DarInstaller.java:1080)
... 8 more

I am getting the above error while installing D2 dar file . Please assist me.