Can't login to admin site

Django 1.2.1

Created new project, set DB settings (postgresql_psycopg2),
MEDIA_ROOT, MEDIA_URL, TEMPLATE_DIRS, added django.contrib.admin to
INSTALLED_APPS.

In urls.py uncommented:
from django.contrib import admin
admin.autodiscover()

and

(r'^admin/', include(admin.site.urls)),

Run manage.py syncdb - tables and superuser were successfully created.
Run manage.py runserver, opened http://127.0.0.1:8000/admin/ in
browser - got admin site login page, entered superuser login/pwd,
pressed Login button and got django debug error page:

TypeError at /admin/

add() takes at most 6 arguments (7 given)

Request Method: POST
Request URL: http://127.0.0.1:8000/admin/
Exception Type: TypeError
Exception Value:

add() takes at most 6 arguments (7 given)

Exception Location: /usr/local/lib/python2.6/dist-packages/django/db/
models/base.py in _collect_sub_objects, line 558
Python Executable: /usr/bin/python
Python Version: 2.6.5
etc.

What am I doing wrong?

--
You received this message because you are subscribed to the Google Groups "Django users" group.
To post to this group, send email to django-users@googlegroups.com.
To unsubscribe from this group, send email to django-users+unsubscribe@googlegroups.com.
For more options, visit this group at http://groups.google.com/group/django-users?hl=en.