Just noticed this error on one of my sites and I have narrowed it down to the CFT plugin. When I go to save my posts I get redirected to an error page that displays the following:
Warning: strtolower() expects parameter 1 to be string, array given in /home/lightt33/public_html/wp-includes/formatting.php on line 979
Warning: Cannot modify header information - headers already sent by (output started at /home/lightt33/public_html/wp-includes/formatting.php:979) in /home/lightt33/public_html/wp-admin/post.php on line 233
Warning: Cannot modify header information - headers already sent by (output started at /home/lightt33/public_html/wp-includes/formatting.php:979) in /home/lightt33/public_html/wp-includes/pluggable.php on line 896I tried using the default 2014 theme and deactivated all other plugins. I tried over-writing the specific files with clean versions from a fresh download and still the same problem. Any suggestions on this? I am stumped. Thanks!