I've updated to 2.8.5. Now I cannot insert images, with or without captions, in posts or pages, and I cannot update posts or pages that contain images. When I hit the update button, I get a front-end view of the site with a 404 - Not Found error. The URI reads http://www.domain.tld/wp-admin/post.php. I am not having this problem with text changes. Please fix this!