bazaar crashes when attempting to 'Remove' a folder during commit review stage.

[jo cogger]

does not happen for all folders. only one particular folder

bzr: ERROR: exceptions.AttributeError: 'module' object has no attribute 'BzrRemoveChangedFilesError'

Traceback (most recent call last):
  File "C:/Program Files (x86)/Bazaar/plugins\qbzr\lib\treewidget.py", line 2064, in remove
AttributeError: 'module' object has no attribute 'BzrRemoveChangedFilesError'

bzr 2.5.1 on python 2.6.6 (win32)
arguments: ['C:\\Program Files (x86)\\Bazaar\\tbzrcommand.exe', '--command=commit', '--file=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx']
encoding: 'cp1252', fsenc: 'mbcs', lang: None
plugins:
  bzrtools C:\Program Files (x86)\Bazaar\plugins\bzrtools [2.5.0]
  changelog_merge C:\Program Files (x86)\Bazaar\plugins\changelog_merge [2.5.1]
  colo C:\Program Files (x86)\Bazaar\plugins\colo [0.4.0]
  explorer C:\Program Files (x86)\Bazaar\plugins\explorer [1.2.2]
  externals C:\Program Files (x86)\Bazaar\plugins\externals [1.3.4dev2]
  fastimport C:\Program Files (x86)\Bazaar\plugins\fastimport [0.14.0dev]
  git C:\Program Files (x86)\Bazaar\plugins\git [0.6.8]
  launchpad C:\Program Files (x86)\Bazaar\plugins\launchpad [2.5.1]
  loom C:\Program Files (x86)\Bazaar\plugins\loom [2.3.0dev]
  netrc_credential_store C:\Program Files (x86)\Bazaar\plugins\netrc_credential_store [2.5.1]
  news_merge C:\Program Files (x86)\Bazaar\plugins\news_merge [2.5.1]
  pipeline C:\Program Files (x86)\Bazaar\plugins\pipeline [1.4.0]
  qbzr C:\Program Files (x86)\Bazaar\plugins\qbzr [0.22.3]
  rewrite C:\Program Files (x86)\Bazaar\plugins\rewrite [0.6.4dev]
  svn C:\Program Files (x86)\Bazaar\plugins\svn [1.2.2]
  upload C:\Program Files (x86)\Bazaar\plugins\upload [1.2.0dev]
  xmloutput C:\Program Files (x86)\Bazaar\plugins\xmloutput [0.8.8]