Try to update with newer version via this link: http://addons.mozilla.org/ru/firefox/addon/unityfox/versions/ there is version 0.2.2 - it works fine for me.
Try to update with newer version via this link: addons. mozilla. org/ru/ firefox/ addon/unityfox/ versions/
http://
there is version 0.2.2 - it works fine for me.