Prestashop bug needs to be fixed

I have this Prestashop based website: http://www.panamahub.net. There is a bug that I can't figure out. Every time I create a product and Friendly URL with it, the site creates 3 different instances of the same product page. For example I create 'product1' with the Friendly URL 'cool-product-1' than the site somehow creates - [login to view URL] - [login to view URL] - [login to view URL] It gets very messy when I change Friendly URL for another language. It uses for example the English friendly URL on the Spanish page and vice versa. These are 3 different pages of the same product and Google detects it as duplicate content. It affects my SEO badly I always get Duplicate errors in Webmaster tools. I need someone to fix this bug.