Mod_python error: "PythonHandler django.core.handlers.modpython"

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/django/core/handlers/modpython.py", line 212, in handler
    return ModPythonHandler()(req)

  File "/usr/lib/python2.4/site-packages/django/core/handlers/modpython.py", line 174, in __call__
    self.load_middleware()

  File "/usr/lib/python2.4/site-packages/django/core/handlers/base.py", line 53, in load_middleware
    mw_instance = mw_class()

  File "/home/schyffel/cykelverket.se/pingback/middleware.py", line 8, in __init__
    self.xmlrpc_url = urlresolvers.reverse('xmlrpc')

  File "/usr/lib/python2.4/site-packages/django/core/urlresolvers.py", line 390, in reverse
    return iri_to_uri(u'%s%s' % (prefix, resolver.reverse(view,

  File "/usr/lib/python2.4/site-packages/django/core/urlresolvers.py", line 312, in reverse
    possibilities = self.reverse_dict.getlist(lookup_view)

  File "/usr/lib/python2.4/site-packages/django/core/urlresolvers.py", line 229, in _get_reverse_dict
    self._populate()

  File "/usr/lib/python2.4/site-packages/django/core/urlresolvers.py", line 197, in _populate
    for pattern in reversed(self.url_patterns):

  File "/usr/lib/python2.4/site-packages/django/core/urlresolvers.py", line 279, in _get_url_patterns
    patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)

  File "/usr/lib/python2.4/site-packages/django/core/urlresolvers.py", line 274, in _get_urlconf_module
    self._urlconf_module = import_module(self.urlconf_name)

  File "/usr/lib/python2.4/site-packages/django/utils/importlib.py", line 35, in import_module
    __import__(name)

  File "/home/schyffel/cykelverket.se/mysite/urls.py", line 18, in ?
    (r'^admin/(.*)', admin.site.root),

AttributeError: 'AdminSite' object has no attribute 'root'