I can see my photos on my GF1, but when I plug in my camera or put the sd card into the computer, it comes up as "unreadable or corrupted" and says that it needs to be formatted (which would erase all the data). It is only this one card that is doing this, so I don't think it is my computer. I have a lot of shots from a good friends wedding on this card, so I would love to be able to save them. Has anyone ever experienced this? Any ideas on how to salvage the photos on the card?