PHP Fatal error: Call to undefined function is_network_admin() in /home/kriswb/public_html/wp-admin/admin-header.php on line 16
I am getting this error on my site, im running 3.0.5.
All of a sudden today when i log into wp-admin i get taken to a 500 internal server error page.
I haven't changed any plugins, none have been updated, no new themes or alterations. Just new content as in posts and media.
Can anyone help me solve this?