The error messages mentioning messagingm...@mozilla.com.xpi appear to be red herrings.
This upstream bug is possibly related: https://bugzilla.mozilla.org/show_bug.cgi?id=1615124 ** Bug watch added: Mozilla Bugzilla #1615124 https://bugzilla.mozilla.org/show_bug.cgi?id=1615124 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1901829 Title: thunderbird fails to open, xml parse error To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1901829/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
