Saving on the MPC500

Hello all, just a quick question about saving via USB to my Mac. Having made a project, saved it in a discreet folder, I would then transfer it to my hard drive with no problem. When attempting to load this folder back onto a CF on my MPC, the project will not load properly. The samples and program are there and can be loaded, but it seems to fall down on the ALLSEQUENCESANDSONGS bit. Very odd. The files are all there, but as soon as its been put on my computer and then re-loaded onto MPC, the sequences have disappeared/have become unreadable.

Any Suggestions or Ideas?

Cheers