Initially I had no problems with using my C-Gear on my Pokemon Black 2 cartridge however when I used my game on my DS lite and then attempted to play the game on my 3DS I'm no longer able to use the C-Gear without getting a connection error.
I honestly believe that whatever emulation that is used to simulate the DS (original) wifi and connection software had became corrupted and is the source of the problem.
All the internet connectivty for my 3DS works fine for other games and the store however whenever I attempt to enable C-gear in game it blue screens my game an dstates that there was a communicatoin error and it needs to be restarted.
I upgraded my DS to the most recent version and then formated it down to factory settings with no success of resolving this issue. I firmly believe the resolutoin of this issue is beyond my control and request a further support from nintendo regarding the matter.