Advanced Guestbook. Upgraded but lost password access??

Howdy,

I upgraded my guestbook from 2.2.1 to 2.3. Basically, I renamed the old guestbook (just in case) and uploaded the new guestbook clean.

Now, when I go to access admin, it lets me type in my user name and password, brings me to the main blue admin page, but when I go to click on one of the admin functions (like General Admin, Templates etc.) it simply brings me back to the password page.

What have I missed? How can I restore access?

The guestbook works ok, just need to sort out the admin thing. Oh, and I ran the database upgrade script as mentioned in a previous post here, not sure I needed to, but it didn't do any harm.

Oh, one more thing. Some users have uploaded pictures, I guess I need to transfer them to the new picture folder to keep it working?