Rated 5 out of 5 stars

Stills sounds like an excellent asset ... would look good on my new ff 4.0!

But, both "Continue to Download" links produce the following Firefox error:

"The add-on from mozilla.org could not be installed because it does not match the add-on Firefox expected."

I bookmarked it, and will check back. :)

This review is for a previous version of the add-on (0.110123.17.1-signed.1-signed).  This user has a previous review of this add-on.