Error log - Please check MS_Rule_Media_Model

I am still having issues on my website re Unresponsive Script, Secondary Menu issues, etc. I have done all the deactivating of plugins and changing themes, debugging, etc.

Today I am checking my error_log - just since yesterday when I deleted it so that I would only have today's log. Again it is 42MB, all from M2P as follows:

[08-Jan-2016 15:04:05 UTC] WordPress database error Table 'chat_wp.wp_posts' doesn't exist for query
SELECT wp_posts.ID, wp_postmeta.meta_value
FROM wp_posts
INNER JOIN wp_postmeta ON wp_posts.ID = wp_postmeta.post_id
AND wp_postmeta.meta_key = '_wp_attachment_metadata'
AND wp_postmeta.meta_value LIKE '%\"register-2\"%'
made by shutdown_action_hook, do_action('shutdown'), call_user_func_array, wp_ob_end_flush_all, ob_end_flush, MS_Rule_Media_Model->protect_download_content, MS_Rule_Media_Model->get_attachment_id, MS_Rule_Media_Model->thumbnail_url_to_id

Please resolve these errors.