Missions wont load in Halo 4

Sorry if this has been posted before but I’ve not managed to find a post about it. Playing MCC and got through to Mission 7 in Halo 4 and the game just freezes during the loading, I did not get the Halo discs as this was bought as a download from Xbox. Any help?

I have the same issue, it loads my checkpoint in chapter 8 90% and then there is a one note repeating sound, like a buzz and it stops loading… I want to finish halo 4 so bad, its my favorite so far. will this be addressed in the bug fixes?