Now, don't everyone come rushing to me with solutions all at once...
Anyway...I've gotten this taken care of, and I figured I'd post my solution, just in case anyone else ends up with this problem. It actually ended up being really simple. To get rid of the error, I just deleted the Black & White Scripting Tools entry with
Add/Remove Program Cleaner. Since all this does is remove the program from the list, I don't know how it made the error go away, but it did. I even tested it several times. It's beyond me, but at least it works. However, it doesn't uninstall anything, but all I had to do was navigate to
C:\Program Files\Lionhead Studios (NOT C:\Program Files\Lionhead Studios Ltd) and delete it. Voila. As far as I know, there aren't any registry entries or temp files that go along with the install, but I don't really care. And if there is anything, I'm sure CCleaner will pick it up.