UnicodeDecode Error on Categories creation

[xavierT]

Hi,

here's a weird thing I'n getting when trying to add categories from Admin panel.

python2.5
Trac-0.11.1
PIL-1.1.6
py-clearsilver-0.10.4-1.3
PyCaptcha-0.4
TracDownloader-0.11

Traceback (most recent call last):
  File "/usr/lib/python2.5/site-packages/trac/web/api.py", line 339, in send_error
    'text/html')
  File "/usr/lib/python2.5/site-packages/trac/web/chrome.py", line 715, in render_template
    return stream.render(method, doctype=doctype)
  File "/var/lib/python-support/python2.5/genshi/core.py", line 179, in render
    return encode(generator, method=method, encoding=encoding, out=out)
  File "/var/lib/python-support/python2.5/genshi/output.py", line 60, in encode
    return _encode(u''.join(list(iterator)))
  File "/var/lib/python-support/python2.5/genshi/output.py", line 311, in __call__
    for kind, data, pos in stream:
  File "/var/lib/python-support/python2.5/genshi/output.py", line 753, in __call__
    for kind, data, pos in stream:
  File "/var/lib/python-support/python2.5/genshi/output.py", line 592, in __call__
    for kind, data, pos in stream:
  File "/var/lib/python-support/python2.5/genshi/output.py", line 707, in __call__
    text = mjoin(textbuf, escape_quotes=False)
UnicodeDecodeError: 'ascii' codec can't decode byte 0xc3 in position 1515: ordinal not in range(128)