Update kills Thunderbird's Lightning calendar

[whyglobaleyes]

Afternoon All,
Newbie here - usual apologies.

I had the same problem with a brand new fresh download & install = no calendar function with Thunderbird (v60.2.1) out of the box + got warnings when I tried to manually install the lightning add-on ("this add-on is not compatible with your version of Thunderbird"). Found an explanation + solution here  https://support.mozilla.org/en-US/questions/1237318

EXPLANATION        (?? FAO any passing mods)
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looks like some repo's un-bundle thunderbird and lightning :: i wonder if that's happened here?

SOLUTION    (very easy)
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Code:

sudo apt-get install xul-ext-lightning

Hope that helps someone one day.
kr
yGii