Hi, I tried out my old DSi with a legit Zelda Phantom Hourglass cartridge in it. Now, this game has a "single-card" download play option, so I figured I could play it with a friend, me using my new 3DS. I can see the game in the 3DS's download play menu just fine. When I try to connect, however, it gives me a "communication error". What's up with this? I had the same problem with other games I ran through a flash card. I also tried using 3DS to broadcast the games, same error on the DSi. Anyone tried this?