I have been having this problem ever since I loaded up the backups of my WordPress databases after switching hosts. Whenever I post a new entry or edit a previous entry, the page would load and give this message:
Warning: array_search() [function.array-search]: Wrong datatype for second argument in /home/deena/public_html/wp-admin/includes/post.php on line 112
Warning: Cannot modify header information - headers already sent by (output started at /home/deena/public_html/wp-admin/includes/post.php:112) in /home/deena/public_html/wp-includes/pluggable.php on line 391
May I know what is causing this?