bzr-explorer error on startup: TypeError in QComboBox.addItem

[Brian Teagarden]

Installed 0.11.2 over an existing bzr2.1.0b4 and bzr-explorer 0.9, and setting the option for Location Selector = tab-groups
Now, on launch, whether inside a branch or not, it gives this error, but does not crash:

bzr: ERROR: exceptions.TypeError: argument 3 of QComboBox.addItem() has an invalid type

Traceback (most recent call last):
  File "C:/Program Files/Bazaar/plugins\explorer\lib\explorer.py", line 1220, in callable_with_cleanup
  File "C:/Program Files/Bazaar/plugins\explorer\lib\explorer.py", line 1384, in _open_location_task
  File "C:/Program Files/Bazaar/plugins\explorer\lib\location_viewer.py", line 109, in add_location
  File "C:/Program Files/Bazaar/plugins\explorer\lib\location_selector.py", line 303, in add_location
  File "C:/Program Files/Bazaar/plugins\explorer\lib\location_selector.py", line 320, in _add_location
  File "C:/Program Files/Bazaar/plugins\explorer\lib\location_selector.py", line 349, in _add_group
TypeError: argument 3 of QComboBox.addItem() has an invalid type

bzr 2.1.0b4 on python 2.5.4 (win32)
arguments: ['C:\\Program Files\\Bazaar\\bzr.exe', '--command=explorer', '--file=C:\\Project\\sw\\feature1']
encoding: 'cp1252', fsenc: 'mbcs', lang: None
plugins:
  bzrtools C:\Program Files\Bazaar\plugins\bzrtools [2.1.0b1]
  explorer C:\Program Files\Bazaar\plugins\explorer [0.11.2]
  launchpad C:\Program Files\Bazaar\plugins\launchpad [2.1.0b4]
  netrc_credential_store C:\Program Files\Bazaar\plugins\netrc_credential_store [2.1.0b4]
  qbzr C:\Program Files\Bazaar\plugins\qbzr [0.17.0]
  rebase C:\Program Files\Bazaar\plugins\rebase [0.5.5]
  svn C:\Program Files\Bazaar\plugins\svn [1.0.1]
  upload C:\Program Files\Bazaar\plugins\upload [1.0.0dev]
  xmloutput C:\Program Files\Bazaar\plugins\xmloutput [0.8.5]

[Ian Clatworthy (ian-clatworthy)]

Fixed in rev 419.