Well first is classic was perl based threads is not. Different animal.
The strange part is the forum is visible but not accessible from the control panel.
You may have a corrupted table due to connection issues or file permissions have changed somehow.
If you know the forum id#. You could start with mysql.
open the Forum_Permissions table and check the new forum and see if the permissions are correct. "Private thread" means you are not allowed which is part of the permissions settings.
For admins groupid would be 1.
It could end up being a lot of database diving.
So I know you are behind a intranet but a support ticket would probably be the best course of action so Rick can take a look.
