Rated 4 out of 5 stars

The review by Maciej Józefiak on 2013-01-23 was bang on.Just do as he says: Download the file, use 7Zip or another archive program to update the file as he describes. Although this is flying blind, it worked perfectly in Thunderbird 17.0.8.John, Ontario, Canada

This review is for a previous version of the add-on (1.0.20110621).