I have LotR Middle Earth on my laptop for travelling (this is where GameJack is most needed) and GJ worked fine. I had to create my own profile because I store my games on a different partition. Now, a month later, I decided to try GJ on my desktop. I have tried the provided profile and have tried to create my own, but I get that dreaded "Insert the CD and try again" message! (My games are installed on Drive G on both computers.) I tried all the usual tricks; removing InCD, etc. but to no avail. I am running Vista on both machines. I even updated the game on my desktop (which I have yet to do on my laptop), but neither the original nor the updated versions work. One thing I haven't tried is running GJ several times on this game. I thought I read that somewhere, but can't recall where--or even how to do it. One of the messages here says that this game is compatible with GJ--and for my laptop it is; for my desktop it isn't. For the record both of these computers REALLY are mine!