I just got the Xbox 360 Slim and had transferred all my data to the new console. I put Marvel Ultimate Alliance 2 in, download the update and all of a sudden, the Disc is unreadable. The game has absolutely no scratches or smudges on it. It's in perfect condition. I try deleting any saved date of the game and clearing system cache, and it still doesn't do the trick. So far, this is the only game I have which doesn't work with the new console. Can someone help?