Cannot stop blocking a site--ended up having to reinstall Firefox from scratch Rated 1 out of 5 stars

I used this script to temporarily block a site. When I tried to then remove the site, the block still continued. I tried uninstalling the add-on, and it still blocks. I've deleted my prefs (which was frustrating and prompted me to upgrade even though I was already upgraded) checking config, etc. I now have to do a complete reinstall of Firefox. I've lost all of my open tabs, including what I was working on in them, and all my other extensions. I'm going to lose everything and have to start all over, including reinstalling all of my applications that have Firefox extensions, just to read my email.

This review is for a previous version of the add-on (