sorry but it's still not working. is possible for you to remote assist? as i'm getting a bit annoyed with now.
Since, according to your own report, your are missing the whole "Addons" menu, it's clear your problem doesn't have anything to do with any of our products so, your "getting a bit annoyed" remark might exactly be what will *prevent* you to get a free remote assistance you are surely not entitled to because the problem (again, according to your own report) it's clearly something basic in your FSX install and it's unrelated to our products.
Courtesy free assistance for stuff totally unrelated to our product might be possible (although one should not expect it or taken from granted), but the next time, try to restrain yourself from such comments, because if your system was already messed up, you just cannot expect our software would magically fix it. If it COULD do that, it would be way more useful than a ground service addon for FSX, and we would be best selling it as a "system fixer", instead...
Contact me by PM for a Teamviewer session, so we'll find out what the non-FSDT related problem you *already* had that is PREVENTING GSX to work (and it's likely prevent any other 3rd party addon module, since you said yourself you don't have any "Addons" menu), which will hopefully fixed...