Exile doesn't load... boots to Start Screen

We have been playing Halo 4 War Games matchmaking just fine until last Sunday. But now when we are playing Big Team Infinity Slayer, we go through player selection, then map selection. If Exile is the map chosen, the eagle spins, it goes to black screen and then… nothing. The screen stays black for a couple of MINUTES then dumps us back to the Halo 4 Start Screen. This is just on Exile. Yes, I’ve cleared the cache and even loaded the disk onto our XBox hard drive to see it any of that stuff would help. Nada. Can’t play Exile at all. The other maps have been having their own in-game issues that everyone has complained about, but Exile won’t load for us at all. Any ideas?

Your disk could be scratched.

Same thing happened to me with Reach, I could never load Long Night of Solace.