Matroska "timing" problem

[Haruka]

I have a problem with matroska files and BSPlayer. The problem comes up with builds 808 and 812(currently using) both.

I have several .mkv files I've tried playing with BSPlayer. The audio and video seem to work just fine. But the player apparently can't read the time code: it shows the file's length to be 00:00:00 / 00:00:00, and the scroll bar (which shows the file timeline) is "full" (ie. at the end of the file). Thus I can't skip around in the file, and have no way to see how much I've already watched and how much there's left.

Anybody familiar with the problem?

Edit: my brother just pointed out, that it seems the subtitles aren't working either.. So it seems to be a codec problem?