masincla

Hey guys, sorry if this has already been gone over. I've gotten the game and exchanged it once already. Whenever I try to load the campaign or it tries to load a matchmaking level, I get sent back to the Main Menu. I can watch the first video, but then I get sent back. I've tried uninstalling disk 2, and reinstalling it. Reinstalling disc 2 and installing disk 1 after. I've tried removing it and then instantly starting with Disk 2 installation before putting disk 1 in. My xbox works with all my other games, so I'm pretty sure it shouldn't be the xbox. Any ideas would be, awesome. Thanks.