More information on my problem:

The errors in the installation logfile:

MAIN: ProcessBeforeConfirmation START at 14:34:35

Executing command:

"D:\dependency\jre\bin\jrew_dep.exe" -cp "D:\dependency" DependencyHandler "C:\Program Files\CSCOpx\setup" C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp\_ISTMP1.DIR\_ISTMP0.DIR\setup C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp\_ISTMP1.DIR\_ISTMP0.DIR\Depends.in

MESSAGE

Cannot create the install dependency file.

MAIN: CleanUpInstall START at 14:36:55

MAIN: Installation complete at 14:36:55