I set that page up to use the mozilla installTrigger method, so clicking the link should activate the firefox install manager. Did that not work for you?
But, when I went back and did it, it worked appropriately.
Thanks again. I've been using the extension quite a bit today. I really like it.
if you are still using the extension I would suggest re-installing once more. I made some fixes and added a few other things, as well as integrating the Firefox update manager. So if you re-install once more, Firefox will automatically find new updates to it for you from here on.