But I have an nVidia card and I had this problem before. I don't remember what the exact cause of the problem was but I don't thinnk it was the .fni file. I might be wrong though. Let's hope it's indeed the fni file, and that you have successfully fixed it.

Out of curiosity: using the bugged version of the age on your wife's computer can you still display the KI? (or any other GUI: Relto book, config menus etc) That would weight in favor of the fni file problem.