I was in the climb at some height (FL150 or so climbing to FL200) when I pressed the Vert Sync button on the captain's yoke. I then got a gizmo command window up with a whole lot of errors in it.   I include the log files   I continued on for some time, but the plane was basically uncontrollable after that. Nothing worked (ie throttles, etc), so basically gave up and quit X-Plane.   I am hoping this is a one of, but include this information if it might be of some help. GizmoLog_error.txt Log.txt