L'objet 'str' n'a pas d'attribut 'resolve' lors de l'accès au site d'administration

Je reçois cette erreur:
'str' object n'a pas d'attribut de 'résoudre'

lorsque vous essayez d'accéder à l'admin de django site et je ne peux pas comprendre
pourquoi.
J'ai des applications au sein de mon projet qui ont leur propre admin.py les fichiers.
Cela pourrait-il provoquer?
voici mon urls.py:

from django.conf.urls.defaults import *
import settings
from django.contrib.auth.views import login, logout
from views import index, simple, complex
from django.views.generic.simple import direct_to_template

# Uncomment the next two lines to enable the admin:
from django.contrib import admin
admin.autodiscover()
urlpatterns = patterns('',
    # Example:
    # (r'^django_jchat/', include('django_jchat.foo.urls')),
    # Uncomment the admin/doc line below and add 'django.contrib.admindocs'
    # to INSTALLED_APPS to enable admin documentation:
     (r'^admin/doc/', include('django.contrib.admindocs.urls')),
    # Uncomment the next line to enable the admin:
    (r'^admin/', include(admin.site.urls)), 

...

Heres la trace de retour:

'str' object has no attribute 'resolve'
Request Method:         GET
Django Version:         1.3
Exception Type:         AttributeError
Exception Value:
'str' object has no attribute 'resolve'
Exception Location:     /home/dockedin/webapps/peebletalk/lib/python2.7/
django/core/urlresolvers.py in resolve, line 252
Python Executable:      /usr/local/bin/python
Python Version:         2.7.1
Python Path:
['/home/dockedin/webapps/peebletalk',
'/home/dockedin/webapps/peebletalk/lib/python2.7',
'/home/dockedin/lib/python2.7',
'/usr/local/lib/python27.zip',
'/usr/local/lib/python2.7',
'/usr/local/lib/python2.7/plat-linux2',
'/usr/local/lib/python2.7/lib-tk',
'/usr/local/lib/python2.7/lib-old',
'/usr/local/lib/python2.7/lib-dynload',
'/usr/local/lib/python2.7/site-packages',
'/usr/local/lib/python2.7/site-packages/PIL']
Server time:    Wed, 10 Aug 2011 15:24:55 -0400
Traceback Switch to copy-and-paste view
/home/dockedin/webapps/peebletalk/lib/python2.7/django/core/
handlers/base.py in get_response
response = middleware_method(request)
...
 Local vars
/home/dockedin/webapps/peebletalk/lib/python2.7/django/middleware/
common.py in process_request
if (not _is_valid_path(request.path_info, urlconf)
and
...
 Local vars
/home/dockedin/webapps/peebletalk/lib/python2.7/django/middleware/
common.py in _is_valid_path
urlresolvers.resolve(path, urlconf)
...
 Local vars
/home/dockedin/webapps/peebletalk/lib/python2.7/django/core/
urlresolvers.py in resolve
return get_resolver(urlconf).resolve(path)
...
 Local vars
/home/dockedin/webapps/peebletalk/lib/python2.7/django/core/
urlresolvers.py in resolve
def resolve(self, path):
tried = []
match = self.regex.search(path)
if match:
new_path = path[match.end():]
for pattern in self.url_patterns:
try:
sub_match = pattern.resolve(new_path)
...
except Resolver404, e:
sub_tried = e.args[0].get('tried')
if sub_tried is not None:
tried.extend([[pattern] + t for t in
sub_tried])
else:
tried.append([pattern]) 

source d'informationauteur de1337ed