Some movies don´t work!

[phobia]

Hello, I have bsplayer 1.2 and I use cole2k media codec. My problem is that some xvid encoded movies do not work. Some play nice while others simply get black and I press play, but nothing! Even there is no progress on the movie time.
It gets black and the time remains like this 00:00:00/1:42:33. There is no progress!
Meanwhile, if I use windows media player 10 I can watch the movie without any problem! :? Does bsplayer have problems with some kind of encoded movies?
I would apreciate if you could help me, since I hate to watch movies with wmp and vobsub.