Rated 5 out of 5 stars

My ReminderFox stopped working today too. Then I read the "edit" in Sarisisop's posting below, which says "Edit: Just updated to 2.1.6.6 and all is working again." So I went to Tom Mutdosch's website and downloaded reminderfox-2.1.6.6-fx.xpi. But I don't know how to use it to update my ReminderFox (which I have in Thunderbird). I've never used an .xpi file before. Would someone please explain how to use it for updating ReminderFox? I depend on it a lot, and look forward to having it operational again. My thanks.

This review is for a previous version of the add-on (2.1.6.6).  This user has other reviews of this add-on.