Addtional debugging info: Debugging turned out that calItipUtils.jsm (@ line 202) did not find any writable calendars.
Currently I uninstalled Thunderbird, cleaned up any cached data and reinstalled Thunderbird. It doesn't work for me. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/810622 Title: Invites can only be accepted into local calendars To manage notifications about this bug go to: https://bugs.launchpad.net/thunderbird/+bug/810622/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs