I also face this same issue, however my camera model is different from you. I just fixed my Nikon by doing this:
First put the SD card into the computer, let it load, and then open a explorer window showing the card.
Then, right click on the item representing the card, choose “Format”
Second, format it as NTFS, even though it should be FAT32
After it’s done formatting, pop it into the camera, it will format it automatically, and it should be fixed.
Hope this works!
You can see full details in Nikon D700 Manual.
