Hi, I have been having this exact same issue recently, was a fix ever found? I've been exploring the possibility it is related to video file type, were you using .avi files?
I had the same issue, it seems to be related with running MSI afterbourner and riva tuner at the same with tracker, if you have any of this softwares try runnig tracker without afterbourner and riva tuner that worked for me.
