I have an EZ4L with Maroi Kart DS, 1 of my friend (A) has the orignal ROM, 1 of my other friend (B) doesn't have the game. Whenever A shares, all 3 of us can play together (B downads from A). But whenever I share, A can join my game because he has the orignal ROM; B, on the other hand, joins the game but his DS stucks at the Nintendo Logo Screen and he's dropped from the game.