The thumbnail of the photo is not showing up in the right side bar under Recent Posts.
You need to set the image as the “featured image” on the post. This is how you set a post thumbnail in WordPress. —
Here’s a video I found online that will show you how to do that: http://www.screenr.com/q7c
Also I linked the photo in the post to the light box popup as per your instructions in the theme demo. It pops up just fine. On the popup photo it reads near the bottom “undefined”. How can I change that to a description of the photo?