You'll have to excuse my ignorance when it comes to Playstations, since I've never owned any iteration (1, 2, or 3) and hardly ever played them. I was under the impression that your FF game was a PS2 game and you were trying to save it to a PS2 memory card. I take it that's not the case? It may still be a problem with the system, but since you know that PS2 cards work just fine with it, it's hard to say. If you haven't already done so, it may help to do some google research to find out if anyone else has ever had problems with PS1 cards in their PS2 and if you have to use the PS1 cards to save your games.

The old switcheroo - I've done this on a couple of occasions with different products. Say you buy something online or receive something as a gift that didn't come with a receipt and it ends up being defective. Go to Wal-mart or some other store that carries the item (make sure they issue refunds on returns and not store credit). Buy a brand new one and then the next day return your non-functioning one with the receipt. You get your money back and they do whatever it is they do with defective merchandise. If there's a restocking fee involved, you should decide before you buy whether it's worth it or not (and of course there's that whole thing about whether you can even afford to make another purchase). This is usually better than trying to return your defective item without a receipt because most stores usually want to give you store credit if you don't have your receipt, and may not take it back at all if you're missing accessories or the original packaging.