Cant connect my fuze to my mac

i got a sansa fuze and i have a mac 

i put some songs on it it and it worked fine

one day it just randomly said "not enough space for music db please free up 90 mb " or something like that 

but now i cant even connect it to my mac

i also can connect it to a pc

help me dude 

Probably a bad file. Use the PC and follow this FAQ