As you are aware the fantastic package of AIG Manager has been released for public beta testing, however If you are using AI Lights Reborn Free Edition you might encounter a conflict with some of the AIG models AI lights, this is because AIG Manager is using the add-on.xml and declaring accordingly a section to deliver the base model default effects:
To avoid any effects conflicts please follow these steps:
1.- Locate your P3D Add-ons folder, for example C:\Users\YourName\Documents\Prepar3D v4 Add-ons
2.- Find the Folder with the name AIG Manager.
3.- Make a backup of your Add-on.xml file
4.- Edit the Add-on.xml using Notepad++
5.- Remove the Effects section as highlighted below:
6.- Save the changes, and relaunch P3D.
All the best,