Black Ops 2 Error stops me playing the campaign

[MrRemnant]

Just got bo2 and have been playing nonstop, til now. Whenever i start the mission "cordis Die" I cannot get past the opening cutscene of the mission. as soon as it finishes i get an error "Unhandled Exception" and have to close the game. I have tried all common fixes including reinstalling the game, but the error persists but only on this one mission. All of my previously completed missions remain playable and work.