Confirmed: Doesn't work for me

Exactly as the user aaronfuzion has described, I had similar results. Just a black/dark overlay with no images and no ability to go back without using the browsers back button. I tested this on a new WP installation using a custom child theme that was very very clean. I probably won’t be bothering with this plugin ever again, luckily I only spent about 5 minutes on it and moved on.