Z 1 z 5 hwěžkow pohódnoćeny

wot dvrennes dnja Sept. 11, 2014 ·

Cannot install. Though top of the article says compatible from 17.1 to 34.0 it does not install on version 32.0.
Pity, I need it desperately.

Tute pohódnoćenje je za předchadnu wersiju přidatka (1.1). 

wot Jonathan Protzenko (wuwiwar) Sept. 11, 2014 ·

Have you followed http://kb.mozillazine.org/Extensions_%28Thunderbird%29#Installation ?