Ok, I just realized that Pin 41 is not used. That will probably solve the problem.
But I do have another Question. Where does the Voltage supply for the light switches come frome?
Mine did not light up when wired to the shield, but did when supplied by external power supply.
I checked and it looks like that there is no voltage at the pins.
Did anybody else had this problem? Did I kill my board or am I missing something? BTW: What are the jumper connectors for?