I'm using a 16MB SmartMedia card with my PSR-3000. I just purchased a 6-in-1 USB card reader in order to add files to the card through my computer. When I tried reading the files on the PSR, I repeatedly get a "Disk Error" and it cannot read the files. In addition, when copying files to and from the card through my computer, I often get stuck with an error message about a cyclic redundancy error. Now what?