Program is distributed as ZIP or 7 ZIP package: download to temporary directory and unpack to destination folder (delete files from previous versions). See below for download link(s) - calendar-timezones-2.2016c.xpi is a fix for Lightning integrated in Thunderbird ver. 38.8.0 beta 7.
RUN!.exein Thunderbird's installation folder; rename it as
thunderbird!L.exeand use this one to start the program.
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