Bazaar Explorer won't open after getting error while editing editors.conf

Hello,

One of our Bazaar users ran into an issue this morning that I hope someone can help with.

There is one particular file type that we have had a little trouble with when trying to open the file from the modified/added/etc list in the main pane of Bazaar Explorer. In trying to resolve this he made a change, got an error and Bazaar Explorer gave an error with the option to ignore/close. He closed and now Bazaar explorer wouldn't open again. Some details from the user:

------------------------------------
I was editing editors.conf. I added the following line to it:

uxf = "C:\Users\Ray.Hendrey\bin\test_cmd_parms.bat %(root)s %branch_root"

The test_cmd_parms.bat is just a batch file that echoes the command line parameters to a text file, along with the environmental variables that are set. I am trying to get it to open the UXF files when I click on one in the status report. I have determined that the file name supplied to the command begins with docs/, so it is relative to the beginning of the current working tree. I was trying to find out if there is a variable that will allow me to specify that. I was using http://doc.bazaar.canonical.com/explorer/en/tutorials/customization.html as guidance. It contains the line " Placeholders are included using the format %(name)s. To include a real % in an action, use %%", and I was trying through experimentation, to find out what %(names)s means. Anyways, here is the error message.
----------------------------------

 I have attached the screenshot with the error.

He tried a couple of other things to try to get it to open again:

----------------------------------
I removed the s, so the line now reads: uxf = "C:\Users\Ray.Hendrey\bin\test_cmd_parms.bat %(root) %branch_root"
and it starts, but it takes 20 seconds or so for the GUI to show up. It may still be logging errors.... removing the "%(root) %branch_root" part does not seem to speed it up any.
----------------------------------

Here is the system.log information since his last "clean" startup:

Mon 2012-03-12 09:12:41 -0700
0.047 bazaar version: 2.3.1
0.047 bzr arguments: [u'explorer']
0.062 looking for plugins in C:/Users/ray.hendrey/AppData/Roaming/bazaar/2.0/plugins
0.062 looking for plugins in C:/Program Files (x86)/Bazaar/plugins
0.125 encoding stdout as osutils.get_user_encoding() 'cp1252'
0.234 loading explorer extensions for clothes [u'Bazaar support', u'Register on Launchpad']
0.234 explorer extensions provided by the colo plugin in C:/Program Files (x86)/Bazaar/plugins/colo/explorer
0.265 Traceback (most recent call last):
File "bzrlib\commands.pyo", line 926, in exception_to_return_code
File "bzrlib\commands.pyo", line 1126, in run_bzr
File "bzrlib\commands.pyo", line 691, in run_argv_aliases
File "bzrlib\commands.pyo", line 713, in run
File "bzrlib\cleanup.pyo", line 135, in run_simple
File "bzrlib\cleanup.pyo", line 165, in _do_with_cleanups
File "C:/Program Files (x86)/Bazaar/plugins\explorer\lib\commands.py", line 162, in run
File "C:/Program Files (x86)/Bazaar/plugins\explorer\lib\explorer.py", line 204, in __init__
File "C:/Program Files (x86)/Bazaar/plugins\explorer\lib\explorer.py", line 818, in init_hats
File "C:/Program Files (x86)/Bazaar/plugins\explorer\lib\explorer.py", line 823, in refresh_menus
File "C:/Program Files (x86)/Bazaar/plugins\explorer\lib\explorer.py", line 834, in _refresh_custom_editors
File "C:/Program Files (x86)/Bazaar/plugins\explorer\lib\extensions\accessories.py", line 396, in custom_editors
File "bzrlib\util\configobj\configobj.pyo", line 736, in items
File "bzrlib\util\configobj\configobj.pyo", line 746, in values
File "bzrlib\util\configobj\configobj.pyo", line 589, in __getitem__
File "bzrlib\util\configobj\configobj.pyo", line 582, in _interpolate
File "bzrlib\util\configobj\configobj.pyo", line 389, in interpolate
File "bzrlib\util\configobj\configobj.pyo", line 367, in recursive_interpolate
File "bzrlib\util\configobj\configobj.pyo", line 453, in _parse_match
File "bzrlib\util\configobj\configobj.pyo", line 423, in _fetch
MissingInterpolationOption: missing option "root" in interpolation.

Any help you can offer would be much appreciated!

Thanks,
Brian