No it doesn't- that's why I'm asking for support. What could cause lax and dfw to work properly but not las?
Yes it does, and please stop insisting it doesn't. At least try to say: why KLAS doesn't work ON MY SYSTEM ONLY ? Have you seen other users reporting jetways not moving at KLAS so far ? I haven't, so it must be something wrong on your system.
Yes
Then the problem might possibly be related to an issue with SODE, since the actual movement is handled by it, not GSX or the scenery. I asked if you saw that menu, to be sure the jetway was in fact handled by SODE and, if you see that menu, it means GSX has received confirmation from SODE the jetways is fine, and CAN connect to your airplane.
Check the SODE log in the SODE Platform Manager, maybe you'll find something there which might help.
Also, be sure you have the "Advanced Animations" setting enabled, but I doubt this is the problem, because if it was, you wouldn't see jetways moving anywhere.