no "Object properties", unable to uninstall or install WinCC flexible

I don't see any "Object properties" window in WinCC flexible 2008 SP2. I don't know where it is hidden or how to active it again. Double click does not work. Right click does not give any option to enable"Object properties".

After dealing with this problem I decided to uninstall WinCC and install it again. spent 2 hours with no luck. still getting the same error message to reboot my system and try it again. Does anyone know how to uninstall WinCC? Deleting some registry entries?

any solutions, tricks or tips how to solve my problems,please?

thanks a lot

Vit