JForums 2.4.1

That seems to be a permissions issue. From a quick glance, it seems that the category admin page doesn't show categories for which Admin permissions haven't been granted when it was created. Try creating a new category and specifically granting access to both Admin and General.

It doesn't seem to make sense to keep admins from administering categories; I need to check why that is, and if it can be changed.

Admin works, General does not. See attached screen capture.

I'm not sure what that screenshot is supposed to show - Test_Gen is not set up for access to Admin users, so it's not shown in that listing. The other two are, so they are shown. Given what I wrote in my previous post, that looks OK to me.

Because of the ability of an Admin to make a mistake and not include themselves, the admin, I now have Categories I, the Admin, can not delete. See screen capture.

Yes, that's the behavior I described in my first post. As I said there, we'll need to check what to do about that.

Thanks.

Is it possible to get an SQL statement to correct my mistake and remove the Categories? This is a new install. Nothing uses the Categories in question. Something that would look for Categories without permissions assigned and delete them would be great.

Do a "select * from jforum_categories;" and delete the entries that are not wanted. The list of categories may be cached, so that a restart of the web app may be required.

@ udittmer I just discovered that no code changes are needed to fix my error. Sorry this is new to me. I just went to the following....
Admin Console -> Forum Admin -> Groups -> Administration -> Permissions
and gave "Administration" full permissions to all the Categories. Then when I went back to Categories I was able to delete them.

Sorry for wasting your time.

Thanks for reporting back. The permission system is one of the more complicated aspects of JForum, but quite powerful once you grok it.