I cannot help you but I would like some help with WTV too.
Does anyone you tube it or anything? Since the new set up came into being I have been completely unable to watch it or it will do is give me a black screen once I hit player or it will flash up once and stutter something and then never play again.
I only have low broadband but on the old WTV I could pause it, let it load and then watch it, I still do the same with you tube.