keeps breaking but good users keep up with the fixes Rated 5 out of 5 stars

thank you Alexthomas! your solution worked perfectly...

copy and paste this into your address bar and it will do the update for you ---> https://github.com/downloads/athomas/mozilla-firefox-addons/gmail_manager-0.6.4.1.3-fx+sm.xpi

This user has 2 previous reviews of this add-on.