Do you have the GSX menu under the "Addons" menu of the sim ? If no, the problem of missing menu items under the Addons menu it's usually caused by one of these:1) Defective antivirus. Download and install with the Antivirus disabled AND configure the antivirus to exclude the whole Addon Manager folder from scanning BEFORE starting the sim.OR2) Missing/Corrupted VC++ libraries in your system. See solution in the "Addon Manager not showing up in P3Dv4 **SOLVED**" thread:http://www.fsdreamteam.com/forum/index.php/topic,17484.msg122656.html#msg122656