If the beta throws LUA errors at login, old beta addons are the first thing to check.
- Warcraft Tavern says the beta loads addons and keybind settings from a previous WoW Beta.
- It says to uninstall or disable those old addons before you log in.
- Reader comments on that page say it did not happen for them.
Unconfirmed how common the problem is.
Source Warcraft Tavern, 17 Sep 2026.