I have attached the log.

Thanks for responding Tim. Subsequent to my post I made several flights without FlightSchool, and the same thing happened: G-Plan stopped working. Don't know why this suddenly started. It had been working perfectly for a couple of weeks.
Where would I find the log file?

I am using Plan G  with X Plane 10 and have just installed FSFlyingSchool for X Plane. Since I've done this, Plan G will crash intermittently, several times during a single flight. It did not do that before the install of Flight School.  Is anyone aware of an incompatibility between these two add-ons? Does anyone know of a fix?