I downloaded some emulators nintendo ds on PC. I tried all of them, but they don't work on my computer and i don't uderstand why it happen. Always when i open file with ANY game Emilator starts to work but then both screens show me that "The save data could not be accessed. Please turn power off and reinsert the Ds card". What did i do wrong? or may be my compuer does support this Emulators? Help me, please.