Starting a few weeks ago I've been sporadically getting a message saying "SD card could not be detected. The software on the SD card could not be displayed." or something along those lines. It hasn't been a big problem so far since it hasn't happened mid-game so far, only on the home menu, and rebooting fixes it, at least for a while. Has anyone who's run into this found a way to fix it, or at least know why it happens? SD card slot seems to be properly seated as far as I could tell, and the Nintendo forums have been as helpful as usual.