Lightbox is empty not showing image

I am using the full width portfolio and i have the paid version of the software but whenever i click on an image i get a blank lightbox and no image displays. Can anyone tell me what would cause this? Everything else with the plug in seems to be working fine.

Here is the site currently having issues.

http://glenallengallery.com/wp/wood/

https://wordpress.org/plugins/portfolio-gallery/