Hello, Upon taking a picture the camera reports: THIS CARD CANNOT BE USED. None of the remedies suggested in the Manual help. All cards tried work fine in another Nikon camera. Resetting did not help either. Images on a disk can however be displayed by the camera.
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Try referring this issue to NikonUSA
I have a D70s and occasionally the card will result in an error. My solution was to leave the USB cable attached to the body and transfer the photos without removing the memory card.