TOPIC: problem when trying to open the lightbox

When I click on the image inside the article to open the lightbox, an error 404 occurs. The message is this:
Not Found

The requested URL /http://www.associazionelocomotiva.it/rassegnastampa/2011/corriere-giorno-22dic2011_thumb_large700_0.jpg was not found on this server.

But the image above mentioned exists! I wonder if the problem is due to the "/" before the "http". In this case, how can I fix the error? Thank you in advance.

The best way to fix the problem is to debug script code on your site. If possible send me admin access to backend of your site and FRP access. I need to debug plugin code to fix the problem. You can send access to my e-mail using contact form on this site.

I have tested this mode of the plugin on my test site. It was the bug. I just fix it. You can download the new version 1.18 on the overview page: iprice-web.ru/en/products/smartresizer
Now the new version allows to add the image caption under or above the thumbnail: minimart.lotix.ru/en/smartresizer-demo/8-lorem-ipsum-5.