I bought the GSX yesterday (05/18/2018) and I still can not use it. I have the Prepar 3D v4.0 and I already did everything that I know to solve the problem. I have no Addon manager or GSX on Add-ons menu. Yesterday I tryed to install with my antivirus turned off and I excluded the addon manager folder on antivirus, reinstaled the VC ++ library (2005, 2013 and 2015), I tryed to put some lines on Appdata and Programdata of my simulator and nothing worked. I noticed too, on my task manager I have the coualt.exe process, but it is "freezed", consuming 2.136k of memory. I really don't know what can I do to enjoy the GSX. (sorry for my bad english)