[Trac] Problem with trac on mod_python

[Sija]

[Tue Mar 01 09:11:21 2005] [error] [client 66.249.64.6] PythonHandler
trac.web.modpython_frontend: Traceback (most recent call last):
[Tue Mar 01 09:11:21 2005] [error] [client 66.249.64.6] PythonHandler
trac.web.modpython_frontend:   File
"C:\\PROGRA~1\\Python\\Lib\\site-packages\\mod_python\\apache.py", line 299, in
HandlerDispatch\n    result = object(req)
[Tue Mar 01 09:11:21 2005] [error] [client 66.249.64.6] PythonHandler
trac.web.modpython_frontend:   File
"C:\\PROGRA~1\\Python\\lib\\site-packages\\trac\\web\\modpython_frontend.py",
line 201, in handler\n    send_pretty_error(e, env, mpr)
[Tue Mar 01 09:11:21 2005] [error] [client 66.249.64.6] PythonHandler
trac.web.modpython_frontend:   File
"C:\\PROGRA~1\\Python\\lib\\site-packages\\trac\\web\\main.py", line 337, in
send_pretty_error\n    if env and env.log:
[Tue Mar 01 09:11:21 2005] [error] [client 66.249.64.6] PythonHandler
trac.web.modpython_frontend: TypeError: __nonzero__ should return an int

what's wrong ?