So the GW was working fine about an hour ago. Closed the DS to eat dinner. Came back and the 3ds had a black screen saying the cart has been removed. No problem. Restart the system. Get to the GW menu, boot into emunand. All good. Then when I hit select, I get no game list, just "Filesystem error." So I take the SD card out of the red card, put it back in, and restart. This time when I try to boot into emunand I get "No Gateway 3Ds Card Found." Turn everything off and restart. Same thing. Remove red card, put it back in, restart. Same thing. This happened 5 times. Then I took the red card out and went to drink a beer. Came back, put the card back in and it booted to emunand, but I got the "Filesystem error" again. Took out the SD card of the red card and put it back in. Restarted and it's working fine. So, is this the slow death of my red card? I bought it back in December 2013, so it's not brand new or anything.