I'm using the same version of P3D (5.4.9.28482) but without the Herve Sors navi-aid. I'm experiencing the same problem with the couatl engine where it seems to load correctly but then disappear from the addon menu. The problem occurs at any airport that I chose, and I noticed that when I chose to use GSX Level 2 jetway at PHNL (also by FSDT), the jetways doesn't appear. I have used the same scenery before in P3D V4.5 with GSX and it worked perfectly fine. I've reinstalled GSX more than 10 times now and the P3D client 2 times to add on that. The issue still persists, I'm attaching a log file (The system language is not in English).