Note: This may be fixed in some Weeks, Months, or Years, so maybe you can try first: > Thunderbird > Add-Ons > Extensions > Search for: Lightning > Install. If you use Ubuntu-Linux or a Derivative, Lightning is not included in Thunderbird 60+ and the Update will break your Calendar (incompatible, not compatible). xul-ext-lightning is not international. Search for Add-On leads to incompatible Version. Someone told, the Beta is not recommended.
Workaround: > Download latest Version of Thunderbird fitting for you from here: https://www.thunderbird.net/en-US/thunderbird/all/ > Open File with Archive-Program(Unzipper) > Goto > thunderbird > distribution > extensions > > {e2fda1a4-762b-4020-b5ad-a41df1933103}.xpi (=Lightning) > Extract > Open your installed Thunderbird > Add-Ons > Extensions > (Remove unwanted english Version of Lightning) > Gear-Wheel-Button next to the Search-Box > Install Add-on From File > Select Download-Folder and the .xpi-File > Install => All your Calendar-Data should be back -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to thunderbird in Ubuntu. https://bugs.launchpad.net/bugs/1797945 Title: Lightning incompatible with Thunderbird 60.2.1 Status in thunderbird package in Ubuntu: Confirmed Bug description: Hi Today I got the update from Thunderbird 52 to 60.2.1. Unfortunately Lightning doesn't work anymore. Thunderbird reports that Lightning is incompatible with Thunderbird 60.2.1. Regards, Ettore To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1797945/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

