To see what Blender thinks, you need to run Blender from command line.
- Open Terminal application
cdthen hit spacebar and drag&drop your folder with Blender into Terminal window
- In Terminal window write
Then if you open Blender’s “User Preferences” tab “Add-ons”, Terminal displays all conflict add-ons.
(There is also patch to show these add ons directly in User Preferences window https://developer.blender.org/D791 for better future)