My R4 has been working perfectly for about a month until I woke up this morning and found that either none of my games loaded, loaded but then crashed straight afterwards or worked fine but didn't let me save. It would even crash when I adjusted the light. I tried clearing everything and then putting it all back on the card but got a major error (when I tried running it on the ds again, I got stuck on the loading screen). When I tried to connect the card to the computer again all I got was "please insert a disk into drive g" error. When I restarted my computer, I could access the card briefly (not enough time to do anything) before it cut me off again with the same error. Does anyone have any ideas? Is there anything I should buy again?