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Not stable yet. good try. Rated 2 out of 5 stars
not pleased, I wrote the prior review "Thank you, Great Add-on" before I started running into problems. I have 3.1.9 of Thunderbird, don't know if other versions affected. Somehow in the sync with google calendar this app screws up something. I've now lost access to 2 newly created calendars in google. Google error message, "this calendar did not load" i.e. it's gone? Uninstalling before it breaks any other calendar. Hope you all have more luck.This review is for a previous version of the add-on (3.5). This user has a previous review of this add-on.