I have been struggling to get a X-Plane/Ardupilot HIL simulation going for the longest time, with the persistent issue being a "GPS:No fix" error. Last week I managed to get it going but then it's decided to break again and I've run out of ideas. Interestingly I can see the plane IMU and GPS data from X-Plane in the simulation tab but no GPS data in the flight data tab. In the past I could see the RC input within the simulation tab but that's gone as well. I'm using an arduino mega 2560, windows 7 64bit machine and X-Plane 10 demo all on the same machine. Thank you for you assistance in advance.