SPOILER

I was playing the mission where youre at reavers party with my friend. when we killed the balverins at the end of the mission the end cut scene where Reaver stops the bullet with his stick did not show up So im just standing there and cant do anything and every time i load up that save im stuck Does anyone have any idea what to do? i dont wanna throw away alot of hours by start over.

Please help if you have a possible solution
sorry for my crappy english