Ok, I had the same problem, and made similar changes like you suggested above. The only problem is that when I went back in to login... my admin account was prompted to update the information. When I entered the information....and clicked update, the page refreshes with the new information, but stays on the update page. I cannot get back in to edit the site.
I am new at this and just recently took over our organizations site without much help from the previous administrator. Any Suggestions?
I tied my original user account and it does the same.