This is the first i've heard of this. Why didn't you say something to me directly? Anyone who has a copy that won't work can return it and will get a free replacement. I've always done it that way. These disks are now duplicated by a 3rd party and I can't watch everyone all the way through to check them.
To remind you, this was your initial comment. "Got mine yesterday and watched it tonight, superb viewing, great production and massive respect to the riders"