I am having trouble with converting .mkv files to .mp4 with GOTSent. I downloaded and installed as per directions given on this site. Alls fine until it get to MP4Box.exe and during the execution of this step I get a message that the program has stopped working and that windows has to close the program. It happens just after the audio is has portion has finished and when it starts to combine it with the video. Anyone know a fix for this?