I think it could be some sort of bug related to the photo.

This is the photo # 604.jpg [Linked Image from outdoorking.com] but for some reason in the latest photo box it is looking for photo # 609 which does not exist at all.

What I have done is change the thumb image # 609 and it works in the latest photo side box.

It is some problem between the post and the side box relating to the picture number.