To fix this, you'll need to connect it to a Windows PC using the USB cable and format it. (I tried with Ubuntu Linux but it failed). My player showed up as the E:\ drive so I ran "format e:" from a command prompt. (It would not format from windows explorer). Once format is complete, the unit will work but all music will have to be reloaded.
Best wishes,
COTM
Child Of The Mist, January 2009