Mod_python error: "PythonHandler mod_python.publisher"

Traceback (most recent call last):

  File "/usr/lib/python2.4/site-packages/mod_python/apache.py", line 299, in HandlerDispatch
    result = object(req)

  File "/usr/lib/python2.4/site-packages/mod_python/publisher.py", line 204, in handler
    module = page_cache[req]

  File "/usr/lib/python2.4/site-packages/mod_python/cache.py", line 82, in __getitem__
    return self._checkitem(name)[2]

  File "/usr/lib/python2.4/site-packages/mod_python/cache.py", line 124, in _checkitem
    value = self.build(key, name, opened, entry)

  File "/usr/lib/python2.4/site-packages/mod_python/publisher.py", line 77, in build
    return ModuleCache.build(self, key, req, opened, entry)

  File "/usr/lib/python2.4/site-packages/mod_python/cache.py", line 371, in build
    exec opened in module.__dict__

  File "/home/webadmin/www.garshol.priv.no/html/download/httptest.py", line 58, in ?
    (scheme,netloc,path,parameters,query,fragment) = urlparse.urlparse(url)

  File "/usr/lib/python2.4/urlparse.py", line 50, in urlparse
    tuple = urlsplit(url, scheme, allow_fragments)

  File "/usr/lib/python2.4/urlparse.py", line 89, in urlsplit
    i = url.find(':')

AttributeError: 'NoneType' object has no attribute 'find'