This bug has been fixed in Tor (see see https://trac.torproject.org/projects/tor/ticket/2063). It seems like the package in Ubuntu hasn't been updated, and I'm not sure why.
You may want to switch to the torproject.org repository: https://www.torproject.org/docs/debian.html.en ** Bug watch added: trac.torproject.org/projects/tor/ #2063 https://trac.torproject.org/projects/tor/ticket/2063 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/796101 Title: Tor Software Error - The Tor software encountered an internal bug. Please report the following error message to the Tor developers at bugs.torproject.org: "" To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/tor/+bug/796101/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs