Loading troubles

I was trying to copy some samples to my memory card and it said that the file or directory couldn't be created. I got the samples with the MPC 1000 guidebook and I was wondering if that meant they were protected or something.

Also, because my computer has an memory card reader I have been taking the memory card and plugging it straight into the computer to copy the samples down, could this be the problem? I checked the properties on my memory card and it isnt even half full but it still wont copy everything down.

I can get about 30 samles on the card before it does this and they work fine when I put it onto the MPC, can anyone help me?

What's the overall size of the card? Kinda hard to answer, 'cause a number of things can dictate your delima since you hold all the info needed to figure this out.

I already told you that the card ISNT full, nonetheless, it is a PNY 128 mb card.