burn

Towards the end of Maw, Cortana tells Master Chief that he has so much time to evacuate. I get on the wart hog then the game itself has this load noise and then the game goes back to the main screen. What a major Bug. I cleaned the disk, which wasn't dirty, tried to play again and the same thing happens! What gives? At $60.00 for this game, this is a major flaw! The disk is not scratched or damaged! Help!