TypeError: pull() got an unexpected keyword argument '_override_hook_target'

Trying to push a loomified branch, after all commits and records, to devpad gives me the following exception:

/usr/lib/python2.5/site-packages/bzrlib/decorators.py:138: DeprecationWarning: bzrlib.lockable_files.LockableFiles.get was deprecated in version 1.5.
  result = unbound(self, *args, **kwargs)
bzr: ERROR: exceptions.TypeError: pull() got an unexpected keyword argument '_override_hook_target'

Traceback (most recent call last):
  File "/usr/lib/python2.5/site-packages/bzrlib/commands.py", line 857, in run_bzr_catch_errors
    return run_bzr(argv)
  File "/usr/lib/python2.5/site-packages/bzrlib/commands.py", line 797, in run_bzr
    ret = run(*run_argv)
  File "/usr/lib/python2.5/site-packages/bzrlib/commands.py", line 499, in run_argv_aliases
    return self.run(**all_cmd_args)
  File "/usr/lib/python2.5/site-packages/bzrlib/builtins.py", line 802, in run
    use_existing_dir=use_existing_dir)
  File "/usr/lib/python2.5/site-packages/bzrlib/push.py", line 172, in _show_push_branch
    stop_revision=revision_id)
  File "/usr/lib/python2.5/site-packages/bzrlib/decorators.py", line 138, in read_locked
    result = unbound(self, *args, **kwargs)
  File "/home/barry/.bazaar/plugins/loom/branch.py", line 548, in push
    return target.pull(self, overwrite=overwrite, stop_revision=stop_revision)
  File "/usr/lib/python2.5/site-packages/bzrlib/decorators.py", line 192, in write_locked
    result = unbound(self, *args, **kwargs)
  File "/usr/lib/python2.5/site-packages/bzrlib/remote.py", line 1584, in pull
    _override_hook_target=self, **kwargs)
  File "/usr/lib/python2.5/site-packages/bzrlib/decorators.py", line 192, in write_locked
    result = unbound(self, *args, **kwargs)
TypeError: pull() got an unexpected keyword argument '_override_hook_target'

bzr 1.6rc3 on python 2.5.2 (linux2)
arguments: ['/usr/bin/bzr', 'push']
encoding: 'UTF-8', fsenc: 'UTF-8', lang: 'en_US.UTF-8'
plugins:
  bisect /home/barry/.bazaar/plugins/bisect [1.1.0pre0]
  bzrtools /usr/lib/python2.5/site-packages/bzrlib/plugins/bzrtools [1.5.0]
  gtk /usr/lib/python2.5/site-packages/bzrlib/plugins/gtk [0.93.0]
  launchpad /usr/lib/python2.5/site-packages/bzrlib/plugins/launchpad [unknown]
  loom /home/barry/.bazaar/plugins/loom [1.4.0dev0]
  lpreview /home/barry/.bazaar/plugins/lpreview [unknown]
  pqm /usr/lib/python2.5/site-packages/bzrlib/plugins/pqm [1.3.0]
  touch /home/barry/.bazaar/plugins/touch.py [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.