In Google WebMaster Tools the crawling errors page is showing 177 missing urls. Most of them are showing as ?attachment_id=xxx
I have looked in the database for these id’s in the wp_posts table but they do not exist.
I have marked these errors in Google Webmaster Tools as fixed, but they keep coming back.
Where else should I look at ? There must be a reference somewhere to these urls, but I can’t find it.