I meet this problem as soon as I updated my GSX + GSX Lv2 yesterday. However, I solved it at a cost of some compromise. At the beginning, check the lines in your Couatl.err to make sure we have met the exact same problem as shown below: File ".\common\aircraftData.py", line 6156, in clearCharger_LCD Somewhere before and after this line, I found the Coualt addon was trying to load the following items, as shown below in Coualt.err: [00:00:15.594] Jetway status None, power = (True,2), air = (True,0) [00:00:15.594] endChargeAircraftBattery() [00:00:15.594] Requested parking services to (Wherever a gate with jetways) From my test between default airports and addon airports, this error always occur when my aircraft was within the range of a GSX Lv2 jetway with an External Power Pod, or trying to parking my aircraft into such a gate using GSX guidance. And my test also showed that any parkings without GSX Lv2 replacement jetways (like a thirdparty scenery with SODE jetways but without specific GSX Lv2 files, default Ctrl J jetways, static jetways) or a ramp won't trigger that error. When further testing GSX Lv2 replacement jetways, I found that when the external power units were removed, this error won't be triggered either Thus, I concluded two solutions, both tested by myself and proven successful: Solution A, Universal solution: find your GSX Control Panel which was automatically generated on your desktop when you installed GSX + GSX LV2, and restore the default jetways, which disabled the GSX LV2 SODE jetways on all default airports. Solution B, Precision solution: When you load into an airport for the first time, respawn on the runway, navigate to addons→GSX→Airport Customization, click "select all parkings with jetways" on the top left area, click jetway1, uncheck the box of External Power, which would prevent the Couatl Error on the airport you have configured. But you need to repeat the process each time you get into a new airport which you haven't configured yet. Attached to both solutions, if you have any GSX lv2 configuration files(.ini) by any third party developers for their sceneried, check if there is a line of the following entry inside: jetway_linkedsimobjectsmask = 14 (or 15) replace "xx" into: "13" if you want to keep Air Conditioner Pod. "12" if you want to remove both pods. "xx"=14 or 15 would trigger that error.