This has never happen to me before but, Ive been getting this error for sometime now whenever I add a featured image to a post. I have yet to figure out why this happens...!
This is the error i get whenever I add a featured image to a post.
Warning: Invalid argument supplied for foreach() in /home/kerdyk/public_html/wp-admin/includes/plugin.php on line 1286
Click the link below to see an image of what I am talking about.