Nero don't support on ti's own MOV files. You must have installed a mov splitter and the requiered codecs to decode the file. Your files are played by BSPlayer using QTime splitter and Nero decoder, because you don't have the apropiate codec to decode. But BSPlayer can handle mov files if you have QT Alternative installed or QT.
FOr more details see:
http://forum.bsplayer.org/viewtopic.php?t=3042