I logged in after 8.1, and the 10 action bars are missing. They aren't visible when configuring, resetting a profile didn't cause them to show up, and I checked with all other addons disabled, also relaunched WoW several times, and downloaded the latest file.

Make sure you’re using the latest (8.1.x) version of dominos (/dom version). The twitch client needs to be restarted to update properly as WoW’s install directory changed, probably to support wow classic

Ok, it's not the right version. The download says 8.1.1, but /dom version is saying 8.0.2
What's the twitch client? I was just downloading from the site.

The new file structure includes a root directory change. So now it's World of Warcraft/retail/Interface/AddOns/ instead of the traditional World of Warcraft/Interface/AddOns/

I had the same problem and ended up crawling around in the file structure and noticed the duplicate folders. Hope that's your problem.

I installed the twitch client and used that to update my addons. Didn't know about the root directory change, but since I was copying it onto a directory, that's definitely what the problem was.
Thank you both for all your help.

Thank you labcatjames! Solved. Gee, thanks Blizz for moving directories and not mentioning it!