Career mode and engine shutdown

Just starting career mode. Have been using free flight and works well with homeycomb alpha and bravo.
On initial flight in career mode, keyboard controls work but there is immediate engine shutdown is I use either the alpha or bravo!
I have rechecked bindings and all appear ok and work fine with free flight.
Community folder is empty.
What am I missing??

Check your fuel switch.

Fuel is half tank.
This is the very first flight in career mode. As long as I use the keyboard or mouse, I can fly. If I use the alpha or bravo, the engine shuts down.
Uses Cessna 172

Moved to User Support Hub as user is requesting assistance from the community.