I'm affected too and thanks to the users here - especially piraten-kris - we got an overview about the workarounds.
It was a bad suprise to start Thunderbird after regular Ubuntu update with missing core-functionality. And it is very hard and time consuming for an user to discover which SW-part is responsible for the misfunction (normally you start with the plugin or the host program). Therefore it was a surprise that Ubuntu is responsible for the error and it is pretty annoying that automatically the responsibility will be denied ("it's not our bug..."). Ubuntu must really asap correct this bug, because it breaks core functionality of an application which Ubuntu take care of! -- 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 : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp