I still haven't gotten windows media player to run on this windows vista box. I don't get the above error anymore but windows media player doesn't even start at all. I have other players like VLC, DIVX, and Quicktime which run flawlessly. So it is
not a codec problem.
I also stuck a version of windows media classic on there and it runs without a problem. So what could be the reason? I even went to microsofts FIX IT sight which not only didn't fix it but messed it up more.