HELP ME PLEASE! The AK2 is showing System Error. And when I put the microSD in my computer, no files are being showed, it's just empty. It's a 4GB Sandisk chip. The computer is saying that it's 3.78GB full meaning there is no Free Space. I think the problem could be caused by my trying to copy a game to another folder. I don't know if that helps though. Please help me and thanks. I didn't format the card yet and I have no back-up data (but I didn't play the DS too much..yet).