No good for m4v to avi

This app crashed a total of 7 times while I tried to add .m4v files to the list. Then when it didnt crash, after restarting my mac, when I pressed the Convert button, only 5 videos managed to convert without error. The only error message it gave me was a popup window that said "failed", no additional info whatsoever to help me find out -why- it failed.

Chris Schutz about Total Video Converter Pro: DVD, v3.1.6