That’s too bad that it didn’t work, not sure what else to try right now. Sorry I couldn’t be of anymore help but it sounds like the gremlins of vista may have won this battle for now. I’ve had friends have this problem on other programs as well, most of what I suggested solved their problems. (but not always)
If it were me I would install it on one of my other computers, and if it doesn’t work on a 2nd computer then it is either a bug with vista(assuming it runs vista) of which there are many, or it would be a faulty/corrupt game file.
Hopefully you come up with something, Wish I could have done more
Good luck with your problem~ (I will keep trying to think of ideas either way)