Fix javascript / JQuery problems 2

Hi, I've got a site built in wordpress, using the Nimble Portfolio plugin. When you click on one of the little thumbnails it should load the full image in a lightbox however at the moment it loads the image directly in the browser. I've spoken to the developer who said "Your site (page) is calling duplicate instances of jQuery library, and a lot of JS errors are thrown due to this. Please make sure you are embedding a single and correct jQuery version." I've checked and removed the duplicate Jquery files, however I'm still getting errors. My site is [login to view URL] Please check the site and then message me giving me a list of what you plan to do to ensure my site works correctly. Maximum of $13.00