IndexError after reverting in Commit window

[lsuser]

Bazaar Explorer 1.0.1 (Win7 64-bit)
After adding few files to version control, I opened commit window, selected one of the added folders, left-clicked and selected Revert, leading to following Error window with traceback. Pressing Ignore repeated the same error. Pressing Close closed the Commit window with no more error messages.

----Traceback----

bzr: ERROR: exceptions.IndexError: list index out of range

Traceback (most recent call last):
  File "C:/Program Files (x86)/Bazaar/plugins\qbzr\lib\treewidget.py", line 726, in parent
IndexError: list index out of range

bzr 2.1.0 on python 2.5.4 (win32)
arguments: ['C:\\Program Files (x86)\\Bazaar\\bzr.exe', 'qcommit', '--ui-mode']
encoding: 'cp1252', fsenc: 'mbcs', lang: None
plugins:
  bzrtools C:\Program Files (x86)\Bazaar\plugins\bzrtools [2.1.0]
  explorer C:\Program Files (x86)\Bazaar\plugins\explorer [1.0.1]
  launchpad C:\Program Files (x86)\Bazaar\plugins\launchpad [2.1.0]
  netrc_credential_store C:\Program Files (x86)\Bazaar\plugins\netrc_credential_store [2.1.0]
  news_merge C:\Program Files (x86)\Bazaar\plugins\news_merge [2.1.0]
  qbzr C:\Program Files (x86)\Bazaar\plugins\qbzr [0.18.3]
  rebase C:\Program Files (x86)\Bazaar\plugins\rebase [0.5.5]
  svn C:\Program Files (x86)\Bazaar\plugins\svn [1.0.2]
  upload C:\Program Files (x86)\Bazaar\plugins\upload [1.0.0dev]
  xmloutput C:\Program Files (x86)\Bazaar\plugins\xmloutput [0.8.6]

[Alexander Belchenko (bialix)]

Gary said it's fixed in qbzr 0.18.4. Please, install newer version using installer for qbzr.

[Alexander Belchenko (bialix)]

If qbzr 0.18.4 or later does not work for you, please inform us.