Problem with Jquery

Hi.

I’m having problems with Jquery on my blog. I installed a new form which isn’t working and their support said it was because “it appears that jQuery isn’t included on your page”

I run Thesis and went into the Thesis options and clicked to include Jquery but still no luck. I had a look at W3 Total Cache and couldn’t see anything wrong there (although I’m not exactly an expert).

When I view my blog in Internet Explorer it comes up with the following problems:
Message: ‘jQuery’ is undefined
Line: 1
Char: 2
Code: 0
URI: https://damienwillis.com/wp-content/plugins/popup-domination/lightbox.js?ver=1.0

Message: ‘jQuery’ is undefined
Line: 11
Char: 2
Code: 0
URI: https://damienwillis.com/wp-content/plugins/contact-form-7/jquery.form.js?ver=2.47

Message: ‘jQuery’ is undefined
Line: 1
Char: 1
Code: 0
URI: https://damienwillis.com/wp-content/plugins/contact-form-7/scripts.js?ver=2.4.1

Message: ‘jQuery’ is undefined
Line: 10
Char: 1
Code: 0
URI: https://ajax.googleapis.com/ajax/libs/jqueryui/1.7.2/jquery-ui.min.js

Message: Expected ‘}’
Line: 1
Char: 55787
Code: 0
URI: https://damienwillis.com/wp-content/w3tc/min/d9a066/default.include-footer-nb.1228909556.js

Can anyone help me to solve this issue(s)?

Cheers,
Damien.