I am playing on a NA Special Edition Cartridge. I went to save the game recently and got the message "Could not detect SD Card. Please turn the power off, and then reinsert the SD Card."

I followed the instructions, but the game still gave me this message, but before the game even booted.

I looked for some solutions online and it appeared as though my extra data was corrupted and need to be deleted. I went to the extra data section in the 3DS menu and deleted the "?" file (all others were for o0ther games so I assume this was the corrupted Fates data). Now when I start the game, it says "Extra Data will be created on SD card.", then displays the message ""Could not detect SD Card. Please turn the power off, and then reinsert the SD Card."

Does anyone know how to fix this so the game can be played again?