3.3.2 was working like a charm, I upgraded to 3.4 via the backend today and now I can't access wp-admin.
Fatal error: Call to undefined function wp_is_mobile() in /home/content/n/i/n/ninatorres/html/miamiriverartfair.com/wp-admin/index.php on line 22
I disabled my plugins through FTP and did the php.ini fix mentioned in the forums, but to no avail.
Any fix for this? Or a way to roll-back to 3.3.2?