Well I had my first successfull flight with APM this morning, tested Stabilise, and FBW-A with no dramas and only some minor adjustments, but have been having issues getting the APM Mission planner to work correctly. When ever I try and write the mission file to APM I get this message: See Attachment
The planner seems to be having issues communicating with APM. The serial monitor in Aduino works fine.
Anybody have any ideas on how to rectify this problem?