Need some more information : do you have the problem with all player or only with bsplayer ? Have you installed DX8.1 ? DX9 ( if neither, install DX8.1 ) ? Have you installed Nimo Pack codec ( or any other codec pack. If yes, you could consider to deinstall them, since they are said to often mess the system ) ? Are you video drivers up to date ( if not, it is time to update them ) ? Did you try to play with the settings in the preference -> video tab ( especially the overlay mode, and the old rendering mode ) ?
Also, can you try to install ffdshow : you will get it here :
http://prdownloads.sourceforge.net/f...3.exe?download ( if the install says you need some dll, do a google search and you will find them ). Does it work better ?
PS @ bluedan : this version finally worked for me. Don't know what happened, but since I installed .NET framework and bsplayer 0.86.494, it works with Bsplayer ( not with ZP, but don't need it anymore ). It must be oggsubtitlefilter which caused problem ( once again... )