From news production, sports production, audio editing and music composing, content creation and the applications that drive the industry are something I have used throughout my career.
After attempting an automatic update to my self-hosted WordPress install from version 3.6.1 to version 3.7, within the admin panel, the site returned a completely blank page… I was unable to log back in to the admin panel at all, and the public site was down as well. The resulting URL displayed in the window contained:
…and in the the error log (viewable via FTP) was the entry:
Call to undefined function wp_get_current_user() in /wp-includes/user.php on line 215