saving issue

hi ive been hammering out some beats on my mpc for a while now and i have an issue with saving.

now normally i dont have any problems i know how to save but today i tryed to make a new folder and save my current project and BAM it comes up with "CARD IS FULL"

so i take out the cf card connect it to the pc to make sure there is room and there is 1.58 gb left on my card, but i still cannot save my current project and im confuised as to why

any sugggestions?

Should get the 128MB RAM. On top of that, the manual says what that message means.