Correct me if I have totally been wrong all these years but you can't buy a PAL only game in America (Shops) or can you? I would assume it wouldn't work in the console like how NTSC/U only games wont work on PAL Console, I would suggest installing the trainer to a usb stick, take of your HDD or any other storage on ur xbox, then put the game disc in the console...DO NOT INSTALL IT, for this test I want you to run it straight from the disc. So run the file beginning with "Launch" and it will show you a message, then show you a black screen, then let it take you back to the dashboard, now when you are on the dashboard, run the game via the disc, wait to get to the main menu, then press start and back together, and then tell me if it works! If it doesn't work then tell me what part never worked, and what happened.