I have Wii firmware 4.3E and Sundriver. All work perfectly with one wiimote.
I have three wiimote and they are all recognised when I start Wii, but when I start a game from my Sundriver I just have wiimote number One. Sometimes i can reconnect other wiimote by using home button and dedicated option(but its very difficult, I don't know why).... but when I restart the game I lose every times wiimote 2 and wiimote3. The 3 wiimote are always reconised on wii menu and just one in game.

Someone can help me please?