I have cut together a 7 minute short. But it doesn't want to render. When trying to render it just stays at 0% and the "time left" keeps going up. I've tried rendering it piece by piece, with no success. An earlier version of the same project DOES render though. The project consists mostly of MOV footage from the Canon 5D Mark II, and a couple of scenes from the HV30. When watching the movie in preview it plays fine. Please help.