when i try to play Mario party multiplayer (download play), the game gaves me an error for communication .. the .@@@ is .3dz, i personaly do it from .3ds to .3dz because and on .3ds format i cant play dp.. soo help? =/ (sorry for my bad english)
You can play using .3ds format, you only need .3dz for online.
Also it would be useful to know what was the error you got if you want help.
Thank u very much i joined all this cfw stuff very late and stiil experiencing some difficulties.... but people like u have always saved me.... btw can u dowload play between a us and eu 3ds ? I have us mario party on us 3ds but when i search for downloadable titles at my eu 3ds nothing comes up....Ahhh I want to scream! I can't believe no one has answered this yet, I had the same problem about a month ago and got it resolved.
I found this tread four weeks ago, and didn't reply because I was lurkng and thought ehh, "someone will answer before me".
FIX-Make sure the game you have downloaded is the same region as the 3DS you are playing it on. A Mario Party EUR download play will not work with a 3DS US. This applies for all games which you want to use the download play feature.