Yet another typo. Screenshot:
Thanks, fixed! Keep reporting them if you spot any, thanks.
But... Now it says:
The category is read-only, new topics or posts can be made
This is kinda not logical. I guess that should say:
The category is read-only, no new topics or posts can be made
You're right, guess that's my fault for not reading the sentence before removing the duplicate word. :) Fixed now