2017.2.1 WIN 10 AMD 8 MadCatz V1
Upgraded three machines to 2017.2.1 normally, leaving FlightGear.org intact, and without problems.
On above machine had deleted flightgear.org.
When went to program joystick found "rudder" selection no longer available for axis 3; an unfortunate development as I use the twist grip for rudder and
axis 5 and 6 for viewing.
Solved my own problem by pasting in a copy of flightgear.org from one of the other machines ; but would have been SOL had I not had it available.
Since suspect others also use twist grip for rudder, would like to know rationale behind this alteration.