Yettwasezmel 5 ɣef 5 n yetran

unfortunately the given solution doesn't work. This is what I also did: I copied the .dic and .aff files of my dictionary to /Program Files/Mozilla/dictionaries. That did it.

This review is for a previous version of the add-on (1.3.2.1-signed.1-signed).  Aseqdac-agi ɣur-s acegger yezrin n uzegrir-agi.