Installed GSX plus GSX2 and updated as of date of this post, so everything should be the latest, after I had uninstalled due to previous problems with new version. Installation apparently went fine, but GSX does not even show up in P3D menu. Please advise.
EDIT: This was apparently my fault in installation. It now shows up and works as expected. If I run into the earlier problems, I'll revisit this issue here. Thank you.