I have Nokia 6600, I install any application on my MMC after that this error fired,
I Off phone and then on it but error popup apper.
Then i format with #*7370# and restart but error apper.
Then i format phone with {Green button +3+*} after that error popup still apper,
Help me to format my MMC

you can try formatting your MMC using a card writer/reader.
hope this helps.

Any other Solution?