I didn't do anything special with Chapter 10 and don't recall any errors in producing it. You are pretty brave converting wmv to DVD. Not the best file type for that kind of thing.
If it helps, the video was rendered in Adobe. I did the Tomasello series in Pinnacle. I was considering the development of a DVD off the Collin tape since I have the avi to work from, but that's another 8 to 12 hours of work.