I just installed a very nice script called Slide Up FX. It allows me to have an opt-in banner at the bottom of the page.
It's on this site:
http://www.freebehaviorcharts.com
When I first installed it, it wasn't working. It started working again when I disabled the Contact Form 7 plugin.
It seems to be compatible with all my other plugins, just not Contact Form 7.
Anything simple I can do so I can reactivate Contact Form 7?