can't save anything...

after spending a few hours chopping records, creating programs and making beat, I tried to save everything in the hard drive and in the memo card, it reads Directory error, what should I do?

Reformat the devices in the load/ save menu.

are you dealing with a hard drive in your mpc? cuz i have the same problem sometimes when i go and save. but i just save it again after it says directory error and it works. i dunno. it only happens sometimes.