The "addon.cfg" file in C:\ProgramData\Lockheed Martin\Prepar3D\ is 1KB and includes four(4) "Package.*" entries. There are no references to any FSDT products in this file.
And this is strange, because the GSX installer ( NOT the Live Update ) is supposed to place the sections here, not in %APPDATA%
The file in \ProgramData\ contains...references to content that has been installed with the command line tools of P3D
Exactly, this is the way the GSX installer works: it ask P3D to add the sections themselves, only during installation. The Live Update will never, ever, touch this and none of our software is trying to access the add-on.cfg file directly. The ONLY time it's even changed, is when installing GSX with the full installer, and not directly, but by using P3D from the command line.
So, if you don't have the FSDT sections in the add-on.cfg under C:\ProgramData, it's can only be caused by one of this:
- You edited the file manually, for some reason.
- An external utility has changed that file.
- Another installer has corrupted it, because it tried to modify it directly ( we don't do that ), so the sections are missing.
- You uninstalled P3D entirely AND manually cleared all settings, by removing the %PROGRAMDATA%\Lockheed Martin and %APPDATA%\Lockheed Martin folders.
THIS will trigger the "Auto-Discovery" feature, which is when the sim finds you have an add-on.xml in the Documents\Lockheed Martin\Prepar3d V4 add-ons which is not referenced in either of the two add-on.cfg files (because you removed their folders in *addition* to uninstalling/reinstalling the sim), so it will ASK "Do you want to activate the add-on xxxx ?".
This is called Auto-Discovery and, if you reply Yes, it will re-create the missing sections for those add-ons in the %APPDATATA%\Lockheed Martin\Prepar3d V4\ADD-ONS.CFG file.