I cannot access the Nintendo e-Shop.

When I attempt to open the Nintendo e-Shop, the system does not allow me to access the store, and instead it kicks me out with an error message: "Error 005-4273."

I recently messed with the files on my SD card. Could that be the reason for my inability to use the Nintendo e-Shop? I have observed other people's messing with their 3DS's SD card, but they were still able to smoothly open the Nintendo e-Shop and download content from it. I know that this question seems unnecessary and ignorant, but I cannot discover a plausible solution to my problem. When I reversed my actions pertaining to the 3DS's SD card, the system still did not allow me to use the Nintendo e-Shop. I need assistance! D: