Didn't work-- all of those files are already gone.

Right, so, I feel like a moron. I'm not sure exactly what's happening here. See, I had to uninstall my game because it wouldn't start (the FAQ didn't help) So, when I went to re-install University (Life Pack) My computer decides that all of the packs are already installed. I deleted the registry entries, it should be working, but no. What's going on here?

Important notes-
I had to manually uninstall my games.
I followed the uninstalling FAQ
My computer has decided to delete the restore points before I uninstalled, so System Restore isn't an option.
When my game was still installed an error message with only a red X showed up.
When I tested the game with out my user files the newly generated folder only has the Logs sub-folder in it