After playing Gears of War 3, I wanted to go back and play Gears of War 2. But every time I put the disc in, nothing much happens and the dashboard just shows 'Open Tray'. I have tried the all of the Xbox support tasks (cleaning the disc, clearing the cache, etc), but none of them help. I saw a google post that mentioned a bunch of people were having this problem after some of the recent Xbox Live Console Updates (but the links to the articles are broken). The rest of my discs work fine and my GOW-2 disc is in mint condition (no scratches, no marks of any kind). I will try to see if another Xbox will play the disc, but am interested if anyone else is having this problem.