I have the same problem in P3D v4.5, GSX crashes after boarding or deboarding requests (see attached err files at different airports). Refueling or pushback works fine. I have run the FSDT Universal Installer Live Update several times, but wihtout success so far. I have also downloaded and installed the OFFLINE installer (update from June 6 th 2024), also without success. Are there further options I can try?