Ok, I have to take back my accusations, because I could at least narrow down the problem.
It looks like GSX only crashes during boarding and deboarding in connection with the Project Airbus A320-200 (CFM and IAE version).
The only question is: What can be done? I have already created new GSX files and also changed the door definitions in aircraft.cfg, without success.
I would really appreciate any tips.
Greetings,
Drebing