Any thoughts on what to do if nothing seems to want to recognize the card? My camera (oddly, regardless of whether the power is on or off)displays and freezes on this error. I cannot interact at all with the camera once this card is inserted. When a new one is inserted, everything returns to normal.
Same with my card readers - one (on my printer) returns a similar error and refuses to recognize the card. On my laptop, the SD reader simply never appears as a valid drive when this particular card is inserted.
I assume I have to find a device that will actually recognize the card before I attempt to use SanDisk Image Rescue to try to get the files off of it, correct?
Finally - anyone know if there's a two-button reformat options on the D3100 similar to that which exists on higher-end cams like my D300?