bzr lp-propose is broken

When trying to use bzr lp-propose, I get the following error:

bzr: ERROR: lazr.restfulclient.errors.HTTPError: HTTP Error 404: Not Found
Response headers:
---
content-length: 97
content-type: text/plain
date: Fri, 04 Feb 2011 11:11:58 GMT
server: zope.server.http (HTTP)
status: 404
via: 1.1 wildcard.launchpad.net
x-lazr-oopsid: OOPS-1861A1008
x-powered-by: Zope (www.zope.org), Python (www.python.org)
---
Response body:
---
Object: <canonical.launchpad.systemhomes.WebServiceApplication object at 0x91a9250>, name: u'1.0'
---

Traceback (most recent call last):
  File "/usr/lib/python2.6/dist-packages/bzrlib/commands.py", line 912, in exception_to_return_code
    return the_callable(*args, **kwargs)
  File "/usr/lib/python2.6/dist-packages/bzrlib/commands.py", line 1112, in run_bzr
    ret = run(*run_argv)
  File "/usr/lib/python2.6/dist-packages/bzrlib/commands.py", line 690, in run_argv_aliases
    return self.run(**all_cmd_args)
  File "/usr/lib/python2.6/dist-packages/bzrlib/commands.py", line 705, in run
    return self._operation.run_simple(*args, **kwargs)
  File "/usr/lib/python2.6/dist-packages/bzrlib/cleanup.py", line 135, in run_simple
    self.cleanups, self.func, *args, **kwargs)
  File "/usr/lib/python2.6/dist-packages/bzrlib/cleanup.py", line 165, in _do_with_cleanups
    result = func(*args, **kwargs)
  File "/usr/lib/python2.6/dist-packages/bzrlib/plugins/launchpad/__init__.py", line 343, in run
    reviews, staging, approve=approve)
  File "/usr/lib/python2.6/dist-packages/bzrlib/plugins/launchpad/lp_propose.py", line 79, in __init__
    self.launchpad = lp_api.login(service)
  File "/usr/lib/python2.6/dist-packages/bzrlib/plugins/launchpad/lp_api.py", line 110, in login
    proxy_info=proxy_info)
  File "/usr/lib/pymodules/python2.6/launchpadlib/launchpad.py", line 287, in login_with
    timeout=timeout, proxy_info=proxy_info, version=version)
  File "/usr/lib/pymodules/python2.6/launchpadlib/launchpad.py", line 138, in __init__
    credentials, service_root, cache, timeout, proxy_info, version)
  File "/usr/lib/python2.6/dist-packages/lazr/restfulclient/resource.py", line 417, in __init__
    self._wadl = self._browser.get_wadl_application(self._root_uri)
  File "/usr/lib/python2.6/dist-packages/lazr/restfulclient/_browser.py", line 295, in get_wadl_application
    response, content = self._request(url, media_type=wadl_type)
  File "/usr/lib/python2.6/dist-packages/lazr/restfulclient/_browser.py", line 277, in _request
    raise HTTPError(response, content)
HTTPError: HTTP Error 404: Not Found
Response headers:
---
content-length: 97
content-type: text/plain
date: Fri, 04 Feb 2011 11:11:58 GMT
server: zope.server.http (HTTP)
status: 404
via: 1.1 wildcard.launchpad.net
x-lazr-oopsid: OOPS-1861A1008
x-powered-by: Zope (www.zope.org), Python (www.python.org)
---
Response body:
---
Object: <canonical.launchpad.systemhomes.WebServiceApplication object at 0x91a9250>, name: u'1.0'
---
bzr 2.2.3 on python 2.6.6 (Linux-2.6.35-25-generic-x86_64-with-Ubuntu-10.10-maverick)
arguments: ['/usr/bin/bzr', 'lp-propose']
encoding: 'UTF-8', fsenc: 'UTF-8', lang: 'en_US.UTF-8'
plugins:
  bash_completion /usr/lib/python2.6/dist-packages/bzrlib/plugins/bash_completion [2.2.3]
  bzrcommitmessage /home/bjorn/.bazaar/plugins/bzrcommitmessage.py [unknown]
  bzrtools /home/bjorn/.bazaar/plugins/bzrtools [2.2.0]
  email /usr/lib/python2.6/dist-packages/bzrlib/plugins/email [unknown]
  launchpad /usr/lib/python2.6/dist-packages/bzrlib/plugins/launchpad [2.2.3]
  lpreview /home/bjorn/.bazaar/plugins/lpreview [unknown]
  lsreview /home/bjorn/.bazaar/plugins/lsreview [unknown]
  netrc_credential_store /usr/lib/python2.6/dist-packages/bzrlib/plugins/netrc_credential_store [2.2.3]
  news_merge /usr/lib/python2.6/dist-packages/bzrlib/plugins/news_merge [2.2.3]
  pipeline /home/bjorn/.bazaar/plugins/pipeline [unknown]

*** 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
    including this traceback and a description of the problem.