bzr: ERROR: exceptions.AttributeError: 'SSHSubprocess' object has no attribute 'get_name'

Traceback (most recent call last):
  File "/opt/local/lib/python2.5/site-packages/bzrlib/commands.py", line 834, in run_bzr_catch_errors
    return run_bzr(argv)
  File "/opt/local/lib/python2.5/site-packages/bzrlib/commands.py", line 790, in run_bzr
    ret = run(*run_argv)
  File "/opt/local/lib/python2.5/site-packages/bzrlib/commands.py", line 492, in run_argv_aliases
    return self.run(**all_cmd_args)
  File "/opt/local/lib/python2.5/site-packages/bzrlib/builtins.py", line 732, in run
    dir_to = bzrdir.BzrDir.open_from_transport(to_transport)
  File "/opt/local/lib/python2.5/site-packages/bzrlib/bzrdir.py", line 688, in open_from_transport
    redirected)
  File "/opt/local/lib/python2.5/site-packages/bzrlib/transport/__init__.py", line 1664, in do_catching_redirections
    return action(transport)
  File "/opt/local/lib/python2.5/site-packages/bzrlib/bzrdir.py", line 665, in find_format
    transport, _server_formats=_server_formats)
  File "/opt/local/lib/python2.5/site-packages/bzrlib/bzrdir.py", line 1422, in find_format
    return format.probe_transport(transport)
  File "/opt/local/lib/python2.5/site-packages/bzrlib/bzrdir.py", line 1432, in probe_transport
    format_string = transport.get(".bzr/branch-format").read()
  File "/opt/local/lib/python2.5/site-packages/bzrlib/transport/sftp.py", line 238, in get
    f = self._get_sftp().file(path, mode='rb')
  File "/opt/local/lib/python2.5/site-packages/bzrlib/transport/sftp.py", line 216, in _get_sftp
    connection, credentials = self._create_connection()
  File "/opt/local/lib/python2.5/site-packages/bzrlib/transport/sftp.py", line 208, in _create_connection
    self._host, self._port)
  File "/opt/local/lib/python2.5/site-packages/bzrlib/transport/ssh.py", line 350, in connect_sftp
    return SFTPClient(sock)
  File "/opt/local/lib/python2.5/site-packages/paramiko/sftp_client.py", line 89, in __init__
    self._log(INFO, 'Opened sftp connection (server version %d)' % server_version)
  File "/opt/local/lib/python2.5/site-packages/paramiko/sftp_client.py", line 109, in _log
    super(SFTPClient, self)._log(level, "[chan " + self.sock.get_name() + "] " + msg)
AttributeError: 'SSHSubprocess' object has no attribute 'get_name'

bzr 1.3 on python 2.5.2.final.0 (darwin)
arguments: ['/opt/local/bin/bzr', 'push', 'sftp://example.com/dest']
encoding: 'UTF-8', fsenc: 'utf-8', lang: 'sv_SE.UTF-8'
plugins:
  launchpad            /opt/local/lib/python2.5/site-packages/bzrlib/plugins/launchpad [unknown]
*** Bazaar has encountered an internal error.
    Please report a bug at https://bugs.launchpad.net/bzr/+filebug
    including this traceback, and a description of what you
    were doing when the error occurred.