Tracがやっぱりうごかなくなった

せっかく動くようになったのに＞＜

調子コイて下記のプラグインを入れてみたところ、
http://sourceforge.jp/projects/shibuya-trac/wiki/CompleteUser
トップページへアクセスしようとすると↓みたいなエラーがでるようになった。

Traceback (most recent call last):
File "/Library/Python/2.5/site-packages/Trac-0.11.1.ja1-py2.5.egg/trac/web/api.py", line 339, in send_error
'text/html')
File "/Library/Python/2.5/site-packages/Trac-0.11.1.ja1-py2.5.egg/trac/web/chrome.py", line 715, in render_template
return stream.render(method, doctype=doctype)
File "/Library/Python/2.5/site-packages/Genshi-0.5.1-py2.5-macosx-10.5-i386.egg/genshi/core.py", line 179, in render
return encode(generator, method=method, encoding=encoding, out=out)
File "/Library/Python/2.5/site-packages/Genshi-0.5.1-py2.5-macosx-10.5-i386.egg/genshi/output.py", line 60, in encode
return _encode(u''.join(list(iterator)))
File "/Library/Python/2.5/site-packages/Genshi-0.5.1-py2.5-macosx-10.5-i386.egg/genshi/output.py", line 311, in __call__
for kind, data, pos in stream:
File "/Library/Python/2.5/site-packages/Genshi-0.5.1-py2.5-macosx-10.5-i386.egg/genshi/output.py", line 753, in __call__
for kind, data, pos in stream:
File "/Library/Python/2.5/site-packages/Genshi-0.5.1-py2.5-macosx-10.5-i386.egg/genshi/output.py", line 592, in __call__
for kind, data, pos in stream:
File "/Library/Python/2.5/site-packages/Genshi-0.5.1-py2.5-macosx-10.5-i386.egg/genshi/output.py", line 710, in __call__
text = escape(pop_text(), quotes=False)
UnicodeDecodeError: 'ascii' codec can't decode byte 0xe3 in position 0: ordinal not in range(128)

他には特に何もいじっていないと思うのだけど。。。
何故急にこんなエラーが。さっぱり分からないので寝る！