problem

just after I battled the two commanders on the peak of mt. coronet (pokemon diamond) and the game screen shifts to that dialga my nosgba game got that "receive error report" screen and I had to shut it down, why? I know its still in early stages and blabla but it should run even tho it was at 40% there. anyone else got this problem?

and now im pissed off because my last save game was at the bottom of that frikkin mountain :angry: