So I finally received my gateway after waiting a month and after playing games with my N3DS XL for only a couple of hours it's not working anymore... So far I've tried starting from step 1 and formatting emunand again, tried 3 different SD cards, tried reformatting the SD cards but to no avail. I've even run the diagnostic test in gateway menu and everything passed! The error message that I keep seeing is "the game card has been removed". It's weird though since the gateway card sees the game when I press select and sometimes the game will run for about 5 seconds before the message shows up. So before I request a exchange does anyone have any idea of what I could do to make it work? I'd prefer not to exchange it since I've been waiting so long to play some games.