Widget not loading - but throwing no errrors

I have installed the floating sidebar tab widget (first one) and yet I can't get it to show up on on any of the pages. As a developer I usually look to firebug for some reason - but FB doesn't report any warnings or errors.

Then I thought that maybe I had a CSS rule that was hiding the tab - so I disabled CSS but the tab still didn't show.

Then I tried IE 7, Safari, and two different domains and each time I got nothing.

I'm showing the javascript loaded ok with a 200 response - but it's not executing. I also have FB and jQuery libs loading so maybe they are fighting with each other - or maybe the load time is not allowing the DOM to be finished when your script runs (even though it is right next to the tag).