Hi,
I think this is because the theme or one of the plugins is including a very old version of jQuery from the google repository. WordPress is loading the current version of jQuery (1.10.2), but this line is subsequently also loading 1.5.1:
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.5.1/jquery.min.js"></script>
You’ll need to remove that line or update it to 1.10.2. It may be coming from the theme or from a plugin. You can check by switching to the standard 2014 theme for a moment, or by temporarily deactivating your other plugins to see if that line disappears.