Navigate to the following path: HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Canon\CapturePerfect (for 64-bit systems) or HKEY_LOCAL_MACHINE\SOFTWARE\Canon\CapturePerfect .
After cleaning, restart your computer and try installing CapturePerfect 3.1 again. capture perfect 3.1 is not found the setup is interrupted
