bzr: ERROR: exceptions.NotImplementedError: should resend request to https://xmlrpc.launchpad.net/bazaar/, but this isn't implemented

matthew@0xB1uE7:~/SMpMS/smpms$ bzr push lp:~bluet/smpms/ae-dbi-hashref
not installing http[s]+webdav:// support (only supported for bzr 1.12 and above)
bzr: ERROR: exceptions.NotImplementedError: should resend request to https://xmlrpc.launchpad.net/bazaar/, but this isn't implemented

*** Bazaar has encountered an internal error. This probably indicates a
    bug in Bazaar. You can help us fix it by filing a bug report at
        https://bugs.launchpad.net/bzr/+filebug
    attaching the crash file
        /home/matthew/.cache/crash/bzr-20110117092028-27371.crash
    and including a description of the problem.

    The crash file is plain text and you can inspect or edit it to remove
    private information.

matthew@0xB1uE7:~/SMpMS/smpms$ bzr --version
Bazaar (bzr) 2.1.1
  Python interpreter: /usr/bin/python 2.6.5
  Python standard library: /usr/lib/python2.6
  Platform: Linux-2.6.32-27-generic-x86_64-with-Ubuntu-10.04-lucid
  bzrlib: /usr/lib/python2.6/dist-packages/bzrlib
  Bazaar configuration: /home/matthew/.bazaar
  Bazaar log file: /home/matthew/.bzr.log

Copyright 2005-2010 Canonical Ltd.
http://bazaar-vcs.org/

bzr comes with ABSOLUTELY NO WARRANTY. bzr is free software, and
you may use, modify and redistribute it under the terms of the GNU
General Public License version 2 or later.

Bazaar is part of the GNU Project to produce a free operating system.

matthew@0xB1uE7:~/SMpMS/smpms$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 10.04.1 LTS
Release: 10.04
Codename: lucid

matthew@0xB1uE7:~/SMpMS/smpms$ LANG=C apt-cache policy bzr
bzr:
  Installed: 2.1.1-1
  Candidate: 2.1.1-1
  Version table:
 *** 2.1.1-1 0
        500 http://free.nchc.org.tw/ubuntu/ lucid/main Packages
        100 /var/lib/dpkg/status