Perhaps check property settings of DivX (5.1.1.) decoder:
[Start] > Programms > DivX > DivX Codec > Decoder Configuration Utility > "Quality settings".
If "Support Generic Mpeg-4" is selected DivX will - in principle - also play XviD encoded movies (and XviD need not be installed).
I understand you've got XviD (also) installed. Perhaps there is some conflict between both codecs.
Also when frames count is running, please check under Options > Filters which filters/codecs BSPlayer actually uses.