TypeError: 'NoneType' object is unsubscriptable

[Lyle Brulhart]

bzr: ERROR: exceptions.TypeError: 'NoneType' object is unsubscriptable

Traceback (most recent call last):
  File "/usr/lib/python2.5/site-packages/bzrlib/commands.py", line
650, in run_bzr_catch_errors
    return run_bzr(argv)
  File "/usr/lib/python2.5/site-packages/bzrlib/commands.py", line
612, in run_bzr
    ret = run(*run_argv)
  File "/usr/lib/python2.5/site-packages/bzrlib/commands.py", line
304, in run_argv_aliases
    return self.run(**all_cmd_args)
  File "/usr/lib/python2.5/site-packages/bzrlib/commands.py", line
622, in ignore_pipe
    result = func(*args, **kwargs)
  File "/usr/lib/python2.5/site-packages/bzrlib/builtins.py", line 201, in run
    to_file=self.outf, short=short, versioned=versioned)
  File "/usr/lib/python2.5/site-packages/bzrlib/status.py", line 157,
in show_tree_status
    want_unversioned=want_unversioned)
  File "/usr/lib/python2.5/site-packages/bzrlib/tree.py", line 91, in
changes_from
    want_unversioned=want_unversioned,
  File "/usr/lib/python2.5/site-packages/bzrlib/decorators.py", line
127, in read_locked
    return unbound(self, *args, **kwargs)
  File "/usr/lib/python2.5/site-packages/bzrlib/tree.py", line 596, in compare
    want_unversioned=want_unversioned)
  File "/usr/lib/python2.5/site-packages/bzrlib/delta.py", line 222,
in _compare_trees
    want_unversioned=want_unversioned):
  File "/usr/lib/python2.5/site-packages/bzrlib/workingtree_4.py",
line 2137, in _iter_changes
    for result in _process_entry(current_entry, None):
  File "/usr/lib/python2.5/site-packages/bzrlib/workingtree_4.py",
line 1918, in _process_entry
    target_parent_id = target_parent_entry[0][2]
TypeError: 'NoneType' object is unsubscriptable

bzr 0.15.0 on python 2.5.1.final.0 (linux2)
arguments: ['/usr/bin/bzr', 'status']

** please send this report to bazaar at lists.ubuntu.com