Why do I keep getting "Reverse parameter missing" when I enter radio setup in the APM planner? I had planner version 1.0.98 and AC2 .50 loaded. I had it flying with .50 loaded and I went through a lot to get the reverseing to save. I went back into the planner to ajust some pid's and after I saved it it was missing the reverse parameters againg and it fliped on takeoff. I checked for updates on the the planner and loaded AC2 .55. Doing the same thing. Does it not work right? or am I missing something?