Restore your old WordPress install, then try updating again. Some error might have occurred while upgrading, causing the site/DB to be inaccessible. If the error persist, then you might need to do a manual update of WordPress.
Upgrading from 3.2.1 to current
The theme name is not related to the folder. The theme name comes from the header information inside the style.css file inside the theme. It’s quite possible that the update being downloaded is a different theme. That’s because of a loophole in the update system itself. The update is checked via the theme-slug instead of … Read more
I think the problem you are going to have is that of Depreciation. As php is upgraded they will only have the libraries for mysqli installed. This may in the future cause your plugin to stop working.
In includes/upgrade.php there is a function called dbDelta. If you’ll pass FALSE as second argument and ” (empty string) as first, then you’ll get the list of all changes, that should be made to database (but none of them will be executed). You can also find the new structure of DB in includes/schema.php file of … Read more
Fast and easy solution would be to update manually. Download the wordpress package from wordpress.org and unpack to your server. https://wordpress.org/support/article/updating-wordpress/#manual-update
This Question was answered on ServerFault by the asker. I am adding his answer here as a community wiki. Here is the full solution, thanks to michaelmior for his help, it got me half way. Run this command to generate keys: ssh-keygen You’ll get this output: Generating public/private rsa key pair. Enter file in which … Read more
Try visiting the list of users, and re-change your role to administrator. WP may have messed up the permissions array during the upgrade.
Try this simple steps to verify it! Install WP DB-Backup in your 2.9.4 version. Backup the DB Setup a test server with WordPress 3.0.4 Install WP-DB-Backup and restore from your previous backup Test your theme
I had the same issue after upgrading my local environment (wordpress/xamp). I ran http://localhost/wordpress/wp-admin/upgrade.php and then I could get back in to the admin. I then had to update the database and upgrade to 3.1 again. After that all seems to be fine. Hope it helps you too!