i am sorry it didn't work.
It has always worked for me maybe they updated it and it has a bug.
As for wmp 12 i tried everything i could think of (which was quite a lot) and it always failed.
The only way to get things to work for me was to go to a 3rd party player.
Some people say they love vlc player.
I have never used it and don't know how it works but the reviews are very high.
and once again it is free.
I am pretty sure it can play dvd's
once again Good luck and i hope it works for you