BS player suddenly crashes! Help Please!

[ender811]

I had this problem on both the newest version and the 2nd newest version. I would play an .ogm or an .mkv file and it sometimes is playing fine, but then the frame rate slows down, the movie freezes, and the player shuts down with the Windows error message "This program must be terminated (or something like that)" press here to send this to microsoft, yada yada yada. I have the Matroska pack installed, divX installed, and an AC3 program installed. I have no clue how to really work this program at all so thanks for any help.