And may be problem started not even at 1.37 or 1.36...
And more - it seems to be blocking VSfilter working with MKV (i remember that it was working good at some previous version of BSP but what was its number?). It is seen in filter list in options but no subs...
Tested at W98, W2000
Edit:
Some testing done on our problem. See
http://forum.bsplayer.org/viewtopic.php?p=22722#22722