Loading 2 copies of jQuery

Loading 2 copies of jQuery

Hi,

Just to start with I'm a novice at wordpress websites, but I have some website experience.

Basically I loaded a new wordpress plugin into my site and it isn't working which after trial and error I have noticed it is because the site has 2 instances of jQuery loading. I think the plugin has loaded another version which has conflicted with the first one. The problem is I need the first instance for the home page and the second instance for another page. Is there a way I can load one instance on page and another on another page?

I have the first instance loaded in a header-default.php and I am looking where the other instance has loaded up.

If there is any other solutions, please let me know. I appreciate the support. 

Source: Main Page
Second Page: This is where I have loaded a portfolio that is not loading because of the 2 jQuery copies are clashing.