I've done an upgrade from WP 3.1.4 to WP 3.4.1. The automatic upgrade wasn't working, so I did it manually following the instructions from this site.
The site is working, but I can't log in to the dashboard, so I can't post any new stuff, I can't activate my plugins, etc.
When I try to login with my user and pass, I get the following message:
You don't have permission to access /wp-admin/upgrade.php on this server.
Additionally, a 403 Forbidden error was encountered while trying to use an ErrorDocument to handle the request.
Thanks in advance for helping me!