I'm having a similar problem, but my IP Pro is registered in the registry.
I installed The Keep into a flash drive, and I'm wondering if perhaps Keep requires that it be installed to the same directory as IP in order to find the files.
If so, is there a way to tell The Keep to search for IP tables?
Or, do I need to install The Keep only to the same directory as IP?
Doing a search with regedit, I see that The Keep isn't in HKEY_CURRENT_USER\Software\NBOS Software. Is there perhaps an issue when installing to a flash drive and not the root directory?
I'll keep plugging and see what I come up with...