So one of my mod categories has disappeared. It's available to admins and moderators. No one else can view it.
Trouble is, it no longer appears in categories.tpl. I can access the topics and post, just doesn't appear in the category list.
There is a bug in the category module (in 0.7). As a temporary solution I had to activate all "inactive" categories (and change the permissions on them to be invisible for the normal registered users).
@hek Don't have any inactive categories unfortunately.
Fixed it, set it as a child category, then back again.