I’m running Thunderbird to read emails on my desktops. And I’m using the Lightning plugin to manage calendars, evens, and tasks.
However, since I updated to Thunderbird 60 some weeks ago, Lightning strangely seems to be broken. The Add-ons manager still lists Lightning as properly installed, but there the “Events and Tasks” menu is missing, as well as the calendar/tasks tabs and the calendar settings in the preferences. As I’ve been pretty busy with many other things, I didn’t study the problem - hoping that the bug gets fixed in the meantime - but living without the calendar addon is cumbersome. And today it became annoying enough to make me investigate this…
There seems to be various issues with calendars in the new Thunderbird version: Mozilla provides an extensive support page dedicated to this topic. Sadly, none of these did help in my case..
I then made sure that the versions of Thunderbird and Lightning are compatible (both are
1:60.0-3~deb9u1 for me):
Eventually, I stumbled upon a thread in the German Debian forums: Thunderbird 60 - Lightning funktioniert nicht. And they figured out, that it may be caused by missing language packs for Lightning… Indeed, I do have language packs for Thunderbird installed (de and en-gb), that are not installed for Lightning:
And it turns out, that this was a problem!
Thunderbird apparently wouldn’t run Lightning unless it has all required language packs installed.
After installing the missing language packs (
aptitude install lightning-l10n-de lightning-l10n-en-gb), the extension is again fully working in Thunderbird!
All that may be cause by a missing dependency..?
thunderbird-l10n-de (and similiar) do not recommend
Not exactly sure how, but maybe the dependencies should be remodelled…?
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