marianne13,
Can you play the .MOV files ok on your computer?
It might be that your computer doesn't have the correct CODEC installed for the converting software to convert it.
What you can do is try to install the
SLD Codec Pack 2.2. Download it from here:
http://www.mympxplayer.com/dload.php...file&file_id=6
Let me know if that works or not.