Fixitmad, sorry for the late reply.
The problem is NOT in something connected with Uninstall Tool neither anything that is left from the previous version of the app.
It's looks clearly for me as system issue: the setup behaves as if it's started with limited access rights, normally it must run under administrative access.
Currently I have 2 solutions for you:
1. Try to download and unpack the portable ZIP package of Uninstall Tool and unpack it to the program folder. Normally, only utshellext.dll will not be copied (because it's in use by the system). Run Uninstall Tool from this folder.http://www.crystalidea.com/downloads/un ... rtable.zip
2. Reinstall/Repair Windows