can't load drums from floppy...plz help

peep this............i had my mpc 60 for about 1 month now and I'm having a problem loading drums from a floppy....i can save a sample onto a floppy and reload a sample but when it comes to the drums it says....... "this file is internally corrupted and cant be loaded: its internal type ID doesn't match its 3-letter name extension"..........even when i try to load the drums that came with the mpc it says the same thing....can someone please help me with this?....

I had the same thing with one sample, i think i used a space to much when saving the file cuz when i save now i make sure its drum001.snd instead of drum001 .snd

I really dont know if this is it actually, but works for me lol