I'm using APM Planner v2.0.24 with sitl and mavproxy linked by UDP port 14550.
I'm in trouble with takeoff copter in guided mode since I always get "failed CMD:22" message when I click on "Liftoff / Launch" button. Through mavproxy the takeoff phase work perfectly.
Of course I armed the drone and I set the "Pilot takeoff altitude" before trying takeoff.
Someone can help me?