LIGHTBEAM VANISHED Rated 5 out of 5 stars

It was working fine for me then it vanished. When downloaded, a small icon that looks like a sail appeared on lower right. Clicking on it opens Lightbeam. My icon vanished. When I try to download again, I can't get it to work. No Icon appears.

This review is for a previous version of the add-on (1.0.2.1-signed).