Hi, Great theme.
When I install this theme it asks for a couple of plugins, one of which is Responsive Lightbox. But the Responsive Lightbox plugin that is fetched is Light - Responsive LightBox from "Captain Theme".
I've looked at your site (demo) and I think that you use the Responsive Lightbox from dFactory. It seems to emulate the behaviour I see on your demo site.
Thought you should know since I had to disable the warning because it kept cluttering up my admin and the "Captain Theme" lightbox is, how shall I say this, "not intuitive".