Image Caption Not Showing with SilveRay Theme

Hello, image captions don’t show up properly when I have the SilveRay theme activated on my site. Here’s an example of a post where this is occurring.

If you look at the image in the post, you will notice that the WordPress image caption box that normally shows up when you add caption to images is stripped.

Is this something simple to correct? If so, how do I do it? Thank you SO much for your time and consideration.