First off, thanks for this plugin!
I am trying to get it to work with my product images as I don't like the latest lightbox that WooCommerce are now using.
Unfortunately, with WooCommerce lightbox disabled and your plugin enabled, when you click on a product image it just whirrs round and round and doesn't display the image. I works find with all other images, just not the product images.
Is this something that you might look at?