Not sure why this happens but sometimes when I rehash and resign my profile whether it be with or without editing anything my profile becomes corrupt.Then when I do random crap on my xbox and try again it works perfect, I just don't get it sometimes...
Can you tell me again when exactly you get the error because you were not that clear before. Is it before the film starts or is it 1-2 seconds after you started the film?
You have to rehash & resign the film. Use this program here: http://rhv2.com/ibotmodz.net/CONcept%200.3.zip Click on Open and find your modded film and then click Rehash/Resign. After that transfer it back to your Xbox and you should be able to watch the film.
I'm not sure what you mean when you say bungie status, but one thing for sure is that you cannot use mark 6 when modding a film or the film will be corrupt when you start it up.