I have the same problem with the add-ons, the weird thing is, you see, when you released the update, I updated and everything works fine.
A couple days later I decided I wanted to reinstall due to terribly unorganized game folder, although when I installed with the v8.0 exe to a new directory, and ran the game, even the default add-ons where gone, I tried adding some to the game file and they still didn't show up.
Report will follow this post.