problems with OSX and saving samples to my memcard

i use a 128mb sandisk CF card, and everything would work right at first, like it would save the program and the drums were on the card, but hten when i tried to reload it , nothing worked.. like it all got erased, am i just using a bad card, im having serious trouble, and this sucks.. if anyone would be so kind as to guide me through this issue, id appreciate it, hit me up via PM or reply, id appreciate it, just basic storage and formatting issues.. put itthis way, i formatted the card 7 times last night before giving up on workin on it, is there anything i can pick up at best buy that would work, or can i just exchange what i have, is this an mpc issue or a card issue.. is basically what im tryin to get out, id appreciate any help and mad love to all the 1k users=)

be easy
DESTRO138

anyone have any idea what the problem might be, imma flip out, i cant save ish to this memory card, and it keeps saying it wont recognize it wheni plug the mpc into my mac.. this makes no sense?

sounds to me like your memory card is ****ed...what happens when you try saving to the CF card that came with the mpc ?