WordPress 3.4 upgrade gets Fatal error: Call to undefined method dbrc_wpdb::delete() in wp-includes/option.php on line 370 Ok if you see this Don’t Panic  it is not the end of the world just a few minutes of yout time. If you found me first I suggest heading over to https://www.techbeast.net/2012/06/13/wordpress-3-4-fatal-error-upgrading-database/comment-page-1/#comment-36094 where Gavin has written a great article on a fix for this issue. On further testing at my end there is something he did not add to the article. That if you want your plugin back you will need to reinstall it after everything has been upgraded. You can also