I just bought a NDSi XL and DSTTi few days ago. The DSTTi software was pre-installed in the SD card. It worked the first time I put it in my NDSi XL, but the next day it didn't work - keep getting this msg "An error has occured. Press and hold......". I've googled the web for solutions but still can't get the thing to work. It load fine on my old NDS - but not on my new DSi XL. Could someone help me out here? What should I do??