add Attachment ERROR

[anonymous]

Traceback (most recent call last):
  File "d:\Python23\Lib\site-packages\trac\web\main.py", line 356, in dispatch_request dispatcher.dispatch(req)
  File "d:\Python23\Lib\site-packages\trac\web\main.py", line 167, in dispatch if not req.path_info or req.path_info == '/':
  File "d:\Python23\Lib\site-packages\trac\web\api.py", line 217, in <lambda> path_info = property(fget=lambda self: self.environ.get('PATH_INFO', '').decode('utf-8'),
UnicodeDecodeError: 'utf8' codec can't decode byte 0xa1 in position 30: unexpected code byte

[cboos]

Duplicate of #3663, which has a fix that might work for you (see comment:13), please try it and follow-up there.