That is a typo in the text...should be PhotoPost Classifieds Uploads...
For your admin panel, Sounds like the PP (PhotoPost) usergroup ID's don't match with your forum's Usergroup ID's. Log in to MySQL (using phpMyAdmin or a similar product), then find the user table for your forum. Check to see what UserGroup ID is given to your admin account. Then go to the usergroup table for PP and change the ID for Admin to match that number. Once you have done this you should be able to log in as admin. After you login, I would suggest going to the Admin Panel - Edit Usergroup of PP and click the "Refresh usergroups from your forum software?" link. This should match them all up again.