Mission 12 Freezing

When playing Battle of Sunaion, once I get to the part to go under the city, Spartan Locke attempts to talk to the Arbiter and gets no response. Soon after my game completely freezes sometimes forcing me to shut off my xbox completely. I have tried starting the mission over and still no luck, it freezes at the same spot. I really want to finish the campaign and would appreciate any suggestions.

I have the excact same issue … Always on mission 12 in the elevator when the arbiter chating with me