No confirmation on submit but responses received. Redirect also not working

Although I am receiving form responses correctly as expected, however I am having two problems:

First, the users do not receive a “thank you, your form has been received” message. I have tested this across browsers, both logged in and logged out of WP. I also tried deactivating the CAPTCHA plugin I am using, which did not help.

Here is a list of plugins I am using in case anyone knows of any known incompatibilities:

Are You A Human
AuthorSure
Elegant Builder
ET Shortcodes
Flamingo
Wordfence
Wordpress MU Domain Mapping (Multisite)
Wordpress SEO (Yoast)

My second problem is that the on_sent_ok actions seem to not be working at all. I have two: one for Google Analytics event tracking and the other to redirect users to a thank you / login page. Here is the code I have plugged in to Additional Settings:

on_sent_ok: “_gaq.push([‘_trackEvent’, ‘Form’, ‘Submission’, ‘Speak Up’]);”
on_sent_ok: “location = ‘http://www.WEBSITE.com/speak-up/petition-received/’;”

Any advice? I tried some of the <script> and <meta refresh> hacks in the “# Sender’s message was sent successfully” field but those did not work either.

http://wordpress.org/plugins/contact-form-7/