You might want to contact Mark Seward about it. Maybe you got a bad DVD.
While on the subject of the video, I love it. It's the most professional quality thing I have ever seen done on the subject.
I would HIGHLY recomend getting the DVD over the tape. For two reasons, first it's cheaper. The book is on hte DVD in PDF.
Second, the info is so well broken into sections that it's nice to be able to pull up the menu and go to the section on just "tempuratures", "breeding", "incubating", "etc.".
That's what I do anyway.
There is even a funny little bloopers section at the end with the Sutherlands.
Good Luck,
Troy