I can enter my username and password successfully but I never get the admin controls and it doesn't seem to acknowledge the login as the @ symbol stil shows Home & Login.
Post a link for a start.
http://www.erebus.com/gallery
Gallery works fine I just can't login.
I get the "Welcome Admin" page and then get bounced out the album index page and am logged out.
Had to reinstall. Apparently fantastico hosed the upgrade. I removed it through fantastico and reinstaled manually.
Thanks for returning and posting your solution. There are known issues with fantastico - it is buggy and known to cause issues, that's why we recommend not to use it at all.