I’m going through Halo 2 Anniversary and after beating Regret it froze on the loading screen for Sacred Icon and booted me back to the Xbox dashboard. Every time I try to load the mission, from resume or mission menu, it crashes. Every other mission in H2A and the other games in MCC load just fine except Sacred Icon. I’ve tried a hard reset and don’t know what to do.
I have the same issue with The Great Journey. This is very frustrating and I hope 343 fixes this issue soon.
Try loading up the level while offline. Does that fix it?