hmmm I checked one of the pages as having issue and it has a featured image as per all my pages.
not sure if my issue is different as the validator error is A value for the image field is required.
I’m having a similar issue but have filed a bug report
Warning: in_array() [function.in-array]: Wrong datatype for second argument in /home4/…../public_html/wp-content/plugins/better-wp-security/modules/free/four-oh-four/class-itsec-four-oh-four.php on line 32
