I have 2 DS Lite, one G6 Lite and Passcard 3. I am having problems starting a download play from the unit with G6 Lite and Passcard 3. The unit downloading the game would get stuck at the "Nintendo" Title screen, then the unit with G6 Lite and Passcard3 will say there is a communication error. Is there a way to solve this problem? I only tried playing Mario Kart and a Mahjong game and the both didn't work. Please help. Thank you.