Rated 1 out of 5 stars
I used lightning for years. Now the option to view the calendar is grayed out. Following the advice to delete the location in the configuration editor and restart Thunderbird does not work. The calendar blog is two years out of date. It appears that Lightning is no longer being supported.This review is for a previous version of the add-on (6.2.5).
Please don't use reviews for bug reports. In which version is this broken? Please file a bug at bugzilla.mozilla.org.