This only seems to happen when I have a video background on my menu, but Encore is cutting off the end of my movies. Usually at the start of the last chapter, whilst moving the chapter marker itself to earlier in the movie. It used to only happen when I deleted a still menu from a project and replaced it with a video menu, but I just created a new project and it's done it again.

It's only 6.3 GB, so it's not a disc capacity issue. The whole movie is there in the timeline, and even plays fine when I preview the disc in Encore. But once I build an ISO, mount it with VCD and play in PowerDVD, it breaks.

How do I fix this?