I've been having this frustrating issue with one of my clients. They are trying to open a .avi file from a CD. I've tried everything from downloading codecs to installing other players (DivX, VLC, Gom, etc.) Nothing works. I thought the CD was bad or the .avi files were corrupt, but others are able to play them with multiple players with no issues. They are all running Windows 7. I'm kind of at a loss at this point. There are 6 users and 3 can play and 3 can't. I don't know if there is a corrupt registry setting or if something else may be stopping them from opening. Thanks!