I found another thread about this, and the main idea was that you can get an error like this when trying to play a game that was designed for PPC2002 on the Axim WM2003. I suppose that is what happened because when I installed it, a pop up message read "this game many not display properly because it was designed for another version of windows".
That's cool and all except: This game DID work when I installed it on Tuesday
The game is Monopoly, and I installed it to my SanDisk 256 mb storage card.
Any ideas on why it would work one day, and then all of a sudden not be considered a valid application on the other?