I tried to edit an old post (made in October) and received the following error after trying to SAVE the post. WordPress database error: [Duplicate entry '12345' for key 1] INSERT INTO `wp_tla_rss_map` SET post_id = '12345', advertisement = '' Warning: Cannot modify header information - headers already sent by (output started at /home/account/public_html/wp-includes/wp-db.php:121) in /home/account/public_html/wp-includes/pluggable.php on line 275[ Code (markup): What's the issue with this? Has anyone encountered same error? Is it a bug?