Was this app made for the N900 ?
When wiimote is started in terminal u can see the reaction of the buttons and what they do.
Packet len 4: 0xa1300008
aPacket len 4: 0xa1300000
Funny thing is this one :
Unknown packet len 8: 0xa12000081000003b
This msg is coming when wiicontrol starts, and when the Nunchuck gets pulled out of the remote.
So i guess there is something wrong with the connection to the nunchuck, and that's maby why it wont work.
I dont have a classic controller to test what happens there.