I have similar problem when I try to make an DivX 5.05 by using the divxdec.ax and I'm using divx 5.05 standalone codec in bspfilters.dat
[BSPlayer filter def file]
AddFilter divxdec.ax,{78766964-0000-0010-8000-00AA00389B71},DivX 5.05
, with the latest bsplayer version 0.86 Build 497 released (16.6.2003) ,
its not working.
Before, with the codec divx 5.02 and the old bspalyer version 0.85 Build 488 released (30.04.2002), all was O.K.