I noticed that the help page for Thunderbird actually loads up a webpage in the web browser. Do you have the symptoms of bug 192513? (Hyperlinks don't open with Thunderbird) That would be the most logical conclusion as to what went wrong.
Does the workaround presented in comments 15 and 17 for that bug work for you? ** Changed in: thunderbird (Ubuntu) Status: New => Incomplete -- Help Menu Item doesn't work https://bugs.launchpad.net/bugs/224180 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs