Gamepad fail due to missing parameters with ArduCopter SITL in QGC

I would like to operate an ArduCopter 4.1 simulated drone on SITL with a GamePad using QGC. for testing purposes.

However, when I try to open the device settings there, I get an error message that certain parameters are not being transferred by the SITL. These are the parameters MNT_RC_IN_PAN, MNT_RC_IN_TILT and MNT_RC_IN_ROLL.

When I exit the device configuration menu, I can no longer start the drone. Now I am informed that the MODE GUIDED could not be selected.

Unfortunately, the problem does not go away when I restart QGC. After that, immediately after trying to connect, I am shown that the drone is not ready and the parameters are missing. The device settings now also only show almost empty pages.

I can only make the drone controllable again by completely uninstalling and reinstalling QGC.

Is there any way I can do this so that I can operate the SITL via QGC using the GamePad?