Help - Can't transfer Audio Book files to my fuze anymore

I updated my firmware today.  Now I can’t upload anything new to my fuze.  I have tried the MTP and the MSC but I keep getting an error saying I didn’t have permission to create a new file on the fuze.  This is very frustrating. Then when I tried to play what is on the MP3 player, the fuze freezes.  It looks like it is on pause and won’t play either the music or the audio files.  If you have any sugestions, I’d appreciate some advice.

I’d try resetting the Fuze and then switching the USB mode to MTP in Settings > System Settings.