Rated 4 out of 5 stars

i cant double click to open maff file,need extra "enter" press.and 0.12 is ok.

Đánh giá này là cho một phiên bản trước của tiện ích (0.17.2). 

Thanks for the report, I'll investigate it when I find some time, even though I don't usually develop on pre-beta versions of Firefox, since newly introduced features are subject to abrupt changes.