bsplayer just closes itself

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Hi,
i don't know what's happening to my bsplayer all of a sudden...
first, u guyz did a great job and the new version of bs is amazing !!
but, i gotta problem, i can't fix..
the thing is, that bsplayer just closes itself, or just shuts down, when i try to open some of my xvid files with ac3 audio...
some of my xvid files work just fine..
at first i thought the file might be corrupt, but it works in windows media player and mplayer for linux...
since i installed new codecs, my windows media player shows every moviel file upside down ^^
what ever codec it is...
so i have to use bsplayer, but it doesn't work atm..
plz help..
thx