Airport Visual System will not show in XPlane's puggin menu. After placing the AVS Floder into  X-Plane/Resources/plugins folder.
Stil dont work after several restarts .No active screen. Program and computer XPlane 11- IMac  4.2 GHz Intel Core i7 32 GB 2400 MHz DDR4 
I have been in touch Flight Factor and still haven't come to a solution. 
I'm thinking of reloading XPlane 11 and see if that doesn't help.
Any help would be appreciated.
Thank you 
Kevin Boddy