2.5.1 upgrade – MAJOR problems

Hi

I was using WordPress 2.5, and I installed the WPAU plugin to upgrade to 2.5.1. The upgrade process was successful, including the ‘Upgrading the Database’ page.
However, since then, I have been unable to login. I enter the correct username and password, only to have the login page reload, with the ‘Please log in again’ error message. Repeating this does not solve the problem. I tried requesting a new password using the ‘Forgot Password?’ link, but entering an email id/password in the field again causes the screen to simply refresh with the error message ‘ERROR: Enter a username or e-mail address.’ appearing on screen.

My login page is at http://blog.severeanomaly.org/wp-login.php
According to my PHPMyAdmin page:
localhost Server version: 5.0.27-standard
phpMyAdmin – 2.11.4
MySQL client version: 4.1.22

I believe that my plugins are not re-enabled post installation, something seems to have gotten screwed up once it updated the database. I have tried restoring a backup, but I get corrupted archives errors when I try to extract the backup ZIP file.

Additionally, in the error_log I see:
[28-Apr-2008 16:07:24] WordPress database error Table ‘severe_wrdp1.wp_users’ doesn’t exist for query SELECT * FROM wp_users WHERE ID = 1 LIMIT 1 made by get_userdata

However, the SQL database does have a ‘wp_users’ field.

Incidentally, on a second blog at http://lifezlikethat.severeanomaly.org , I am unable to login as well, however, this blog shows no error message in the log.

Please help !