uninstalling Addon manager with the Uninstall007 msi within P3D folder
We never suggested to do it this way. The Addon Manager has a proper entry in the "Program and Functionality" section of the Windows Control Panel.
I checked the dll.xml in both the application folder and the AppData folder, neither has the Addon Manager entry.
This is normal, after an uninstall.
Then I set an exception on my AVG for the whole of the P3D folder. I run P3D with AVG disabled though, just to be safe.
Not needed if you set the exception that way.
And now, I can fly QW757 no problems! Hooray!
Of course it works...
Should I backup bglmanx.dll and then install airports and then GSX and then copy bglmanx back over? Thoughts would be appreciated.
There's nothing to do and the installation order doesn't matter. All FSDT and Flightbeam and QW757 installers downloads and installs exactly the SAME version of the Addon Manager files, which are downloaded from the same location: our own server.
Since it seems to be confirmed it was the antivirus in your case, once is correctly configured to exclude the whole sim folder from scanning, the only thing you might still have to do, is to DISABLE the antivirus WHEN INSTALLING.
This because, even if you set an exception for the P3D folder, the files will have to be downloaded and installed into the Windows temporary folder first, so the exclusion won't work in that case. But it's best NOT to exclude the whole Windows temporary folder, because it IS dangerous (real virus will likely try to go there)