I turned my Nintendo Ds for the first time in a month today, with the EDGE v1.8 on it. it worked normally. Then, I got the sd card and plugged it to my computer, to organize my stuff. I got a windows message asking me to fix problems in the usb drive, I pressed yes. When I check my games, most of them are gone. What's really weird is that they are still eating up more than half of my USB memory, even thought they are not there. Where have these files gone?