Vitos, I loaded the MiG and selected Autostart from the menu. After about one minute, the panel lights switched off and nothing more happened. The log shows instruments and such loading, then these final lines:
Nasal runtime error: container index not scalar
at /Applications/FlightGear-git.app/Contents/Resources/data/Nasal/view.nas, line 215
called from: /Applications/FlightGear-git.app/Contents/Resources/data/Nasal/view.nas, line 626
using aircraft-dir for:/Applications/FlightGear-git.app/Contents/Resources/data/Aircraft/MiG-15/Nasal/MiG-15bis.nas
loading scenario 'nimitz_demo'
loading scenario 'vinson_demo'
getting flightplan: Cruise-1
AIShip: Cruise-1 initializing waypoints
AIShip: Cruise-1 done initialising waypoints 0
creating 3D noise texture... DONE
Program's vertex attrib binding 7, binormal
Program's vertex attrib binding 6, tangent
Program's vertex attrib binding 7, binormal
Program's vertex attrib binding 6, tangent