Ohodnoceno 5 z 5 hvězdiček

od sberg43 dne Srp. 15, 2010 · trvalý odkaz

I too was unable to use this add-on after the update to Thunderbird 3.1.2. A nice replacement is "MinimizeToTray revived"
https://addons.mozilla.org/en-US/thunderbird/addon/12581/

(My rating is for the new add-on)