After updating to 4.0.3, I am unable to pull any thumbnails from my recent posts as options for thumbnails when linking to my post on Facebook. If I try inserting a link to a post that I wrote prior to this update, Facebook pulls all of the images in the post as options for the thumbnail. If I insert a link to a post I wrote after the update, Facebook pulls only the thumbnails of the 5 Related Posts associated with that post.
Any idea why this is happening? I updated to WP 3.5 the same day, so I'm not sure if it's an issue with that update, with the update for this plugin, or for something else entirely.