Thanks Kevin, I tried it.
Doesn't seem to be working for me. The pax disappear after walking in, but the Flight Attendants stay there.
I have the latest version of both addons (737 and GSX), I just run the live update one more time to be sure.
I also run the FSDT installer as Administrator, but it doesn't work. I tried both the PMDG livery and my own livery.
The Chime switch was in the correct position, but I tried both just to be sure.
Any suggestions?
Edit:
tried removing the custom aircraft profile from gsx, disabled the pax and re-enabled them. Still not working.