Richard
The reason why your FSX is crashing when trying to load WD40 is you do not have a completed Airport yet.
You added a parking spot that does not have a runway/taxiway network defined and this will cause FSX to crash even though the BGLCompiler will compile your airport.
There are 4 tags needed for a airport that has a runway when you added a parking spot.
When adding Taxi information to an airport, the following elements must all be present and appear in this order: TaxiwayPoint, TaxiwayParking, TaxiName, TaxiwayPath. ADE Home handles the proper order once they are on the Grid.
TaxiwayPoint, You do not have
Taxiway parking , You have
TaxiName, must be listed even if no name is assigned
Taxiwaypath, you do not have.
TaxiwayPath requires
Taxiway path Type Runway Link line, You do not have
Taxiway path Type Taxiway or Apron Link Line, You do not have
Taxiway path Type Parking Link line, You do not have
You have a parking spot but you must make a taxiway network that links to a runway linkline if you want your airport to open in FSX with no crashes.
I moved the parking Spot over next to the runway.
I added a Runway Link Line
I added a taxiway path from the parking spot to the runway with a proper holdshort node.
Airport now opens in FSX when you "Go To" WD40
Be sure you are in slew mode if the Airplane of choice when "Going to" is not the Beaver with floats.