At risk of confusing everyone let me add my experience. I upgraded from Dotnetnuke 2.1.2 to Dotnetnuke 3.0.13. Everything went fine. The only problem was that a new user could not register with the site. I logged in as the superuser and started clicking around everywhere and noticed that when I clicked on user management it would error out (I could not get to user management) So I started looking at the tables and found out my Portal was assigned to a user that had a user id that didn’t belong to anyone. I tried to assign it to my superusers id but that still caused odd behavior. When I looked in the administration of the portal, the drop-down that contains the administrators name was blank. The solution was to assign the portal to the ID of a admin that already had an account. Now I was able to log in as that Admin and get to the user management. Now people are able to register with the site. The superuser account still works. I really think the problem was that my superuser was the admin of this portal. All my other portals did not have this problem.