Clip Zip error message

Hi, 

My zip clip no longer shows up when I connect it to my macbook. I am getting the same message “not enough space for Music DB. Please free 200MB” as it continually restarts. And yet it never shows up on my macbook and resetting doesn’t fix anything. All was working well until today I plugged into a PC to charge it and ever since then I have gotten this message and I can’t seem to get anywhere else. Plus, there is over 6G available space. Any suggestions? Is it unfixable? 

http://kb.sandisk.com/app/answers/detail/a_id/848/kw/not%20enough%20space%20for%20music%20DB