Hi, when I press F1 in the main menu to activate the trainer, the game crashes and I get a message saying General Protection Fault.
Is this because incompatibility? My game version is 1.01
Enter Steam, go to My Games, right-click on Borderlands, select Properties, click the Local Files tab and click "Verify Integrity of Game Cache".
Also, if in Vista/7, make sure both the game and trainer are running in Administrator mode.