Encoding Error for ReviewBoard 1.5 on Windows XP

[travis]

I've just installed the lastest Review Board on my computer today by
following the url ''http://www.reviewboard.org/docs/manual/1.5/admin/
installation/windows/'.

Everything is fine until I got a 500 error while adding a new
repository.

I chose the Custom+SVN, and input all the necessary fields. Here is
the message I got:

--
Something broke! (Error 500)

It appears something broke when you tried to go to here. This is
either a bug in Review Board or a server configuration error. Please
report this to your administrator.
--

And here is the traceback I got from log file:

--

'utf8' codec can't decode bytes in position 17-18: invalid data. You
passed in 'DLL load failed: \xd5\xd2\xb2\xbb\xb5\xbd
\xd6\xb8\xb6\xa8\xb5\xc4\xb3\xcc\xd0\xf2\xa1\xa3' (<type 'str'>)
Traceback (most recent call last):
File "d:\python25\lib\site-packages\django-1.2.3-py2.5.egg\django
\core\handlers\base.py", line 100, in get_response
response = callback(request, *callback_args, **callback_kwargs)
File "d:\python25\lib\site-packages\django-1.2.3-py2.5.egg\django
\contrib\admin\sites.py", line 512, in root
return self.model_page(request, *url.split('/', 2))
File "d:\python25\lib\site-packages\django-1.2.3-py2.5.egg\django
\views\decorators\cache.py", line 69, in _wrapped_view_func
response = view_func(request, *args, **kwargs)
File "d:\python25\lib\site-packages\django-1.2.3-py2.5.egg\django
\contrib\admin\sites.py", line 531, in model_page
return admin_obj(request, rest_of_url)
File "d:\python25\lib\site-packages\django-1.2.3-py2.5.egg\django
\contrib\admin\options.py", line 1190, in __call__
return self.add_view(request)
File "d:\python25\lib\site-packages\django-1.2.3-py2.5.egg\django
\utils\decorators.py", line 21, in _wrapper
return decorator(bound_func)(*args, **kwargs)
File "d:\python25\lib\site-packages\django-1.2.3-py2.5.egg\django
\utils\decorators.py", line 76, in _wrapped_view
response = view_func(request, *args, **kwargs)
File "d:\python25\lib\site-packages\django-1.2.3-py2.5.egg\django
\utils\decorators.py", line 17, in bound_func
return func(self, *args2, **kwargs2)
File "d:\python25\lib\site-packages\django-1.2.3-py2.5.egg\django\db
\transaction.py", line 299, in _commit_on_success
res = func(*args, **kw)
File "d:\python25\lib\site-packages\django-1.2.3-py2.5.egg\django
\contrib\admin\options.py", line 777, in add_view
if form.is_valid():
File "D:\Python25\lib\site-packages\reviewboard-1.5-py2.5.egg
\reviewboard\scmtools\forms.py", line 578, in is_valid
return (super(RepositoryForm, self).is_valid() and
File "D:\Python25\lib\site-packages\django-1.2.3-py2.5.egg\django
\forms\forms.py", line 121, in is_valid
return self.is_bound and not bool(self.errors)
File "D:\Python25\lib\site-packages\django-1.2.3-py2.5.egg\django
\forms\forms.py", line 112, in _get_errors
self.full_clean()
File "D:\Python25\lib\site-packages\reviewboard-1.5-py2.5.egg
\reviewboard\scmtools\forms.py", line 500, in full_clean
return super(RepositoryForm, self).full_clean()
File "D:\Python25\lib\site-packages\django-1.2.3-py2.5.egg\django
\forms\forms.py", line 268, in full_clean
self._clean_form()
File "D:\Python25\lib\site-packages\django-1.2.3-py2.5.egg\django
\forms\forms.py", line 296, in _clean_form
self.cleaned_data = self.clean()
File "D:\Python25\lib\site-packages\reviewboard-1.5-py2.5.egg
\reviewboard\scmtools\forms.py", line 520, in clean
self._verify_repository_path()
File "D:\Python25\lib\site-packages\reviewboard-1.5-py2.5.egg
\reviewboard\scmtools\forms.py", line 684, in _verify_repository_path
raise forms.ValidationError(e)
File "d:\python25\lib\site-packages\django-1.2.3-py2.5.egg\django
\core\exceptions.py", line 55, in __init__
message = force_unicode(message)
File "d:\python25\lib\site-packages\django-1.2.3-py2.5.egg\django
\utils\encoding.py", line 96, in force_unicode
errors) for arg in s])
File "d:\python25\lib\site-packages\django-1.2.3-py2.5.egg\django
\utils\encoding.py", line 88, in force_unicode
raise DjangoUnicodeDecodeError(s, *e.args)
DjangoUnicodeDecodeError: 'utf8' codec can't decode bytes in position
17-18: invalid data. You passed in 'DLL load failed: \xd5\xd2\xb2\xbb
\xb5\xbd\xd6\xb8\xb6\xa8\xb5\xc4\xb3\xcc\xd0\xf2\xa1\xa3' (<type
'str'>)

--

The hex string of '\xd5\xd2\xb2\xbb\xb5\xbd
\xd6\xb8\xb6\xa8\xb5\xc4\xb3\xcc\xd0\xf2\xa1\xa3' here is Chinese
words which means 'The specified program is not found', but its not
utf-8 encoded.

My environment is Windows XP in Chinese version + RB 1.5 + Python 2.5
+ Apache(Mod_Python) + SVN 1.6.13 + pySVN.

Anyone can help on this?

Thanks,

Travis