How to get BSPlayer, VobSub and ffdshow work together?

Hi,
I use BSPlayer 1.00 RC1 Build 803, VobSub 2.23 and ffdshow 2003.10.28.
Also I have avi film and subtitles (srt or sub) in the same directory.
VobSub is set to "always load".

Problem:
VobSub is not automatically loaded while playing film with bsplayer :(
I know that it is somehow related to ffdshow, BUT
if I open this film (or any other film with external subtitles) with media player,
vobsub is correctly loaded!

I really do not want to uninstall ffsshow or use media player instead of bsplayer.
Also vobsub works better with international fonts.

Any ideas?