私の解決策は、registration \ auth_urls.pyで定義されたurlpatternsをコメントアウトし、django.contrib.authで定義されたurlpatternsのコピーとして再定義することでした。
変更後のauth_urls.pyは次のとおりです。
"""
URL patterns for the views included in ``django.contrib.auth``.
Including these URLs (via the ``include()`` directive) will set up the
following patterns based at whatever URL prefix they are included
under:
* User login at ``login/``.
* User logout at ``logout/``.
* The two-step password change at ``password/change/`` and
``password/change/done/``.
* The four-step password reset at ``password/reset/``,
``password/reset/confirm/``, ``password/reset/complete/`` and
``password/reset/done/``.
The default registration backend already has an ``include()`` for
these URLs, so under the default setup it is not necessary to manually
include these views. Other backends may or may not include them;
consult a specific backend's documentation for details.
"""
from django.conf.urls.defaults import *
#from django.contrib.auth import views as auth_views
from django.contrib.auth import urls as auth_urls
urlpatterns = auth_urls.urlpatterns
'''
Commented out, this is what caused my problems:
urlpatterns = patterns('',
url(r'^login/$',
auth_views.login,
{'template_name': 'registration/login.html'},
name='auth_login'),
url(r'^logout/$',
auth_views.logout,
{'template_name': 'registration/logout.html'},
name='auth_logout'),
url(r'^password/change/$',
auth_views.password_change,
name='auth_password_change'),
url(r'^password/change/done/$',
auth_views.password_change_done,
name='auth_password_change_done'),
url(r'^password/reset/$',
auth_views.password_reset,
name='auth_password_reset'),
url(r'^password/reset/confirm/(?P<uidb36>[0-9A-Za-z]+)-(?P<token>.+)/$',
auth_views.password_reset_confirm,
name='auth_password_reset_confirm'),
url(r'^password/reset/complete/$',
auth_views.password_reset_complete,
name='auth_password_reset_complete'),
url(r'^password/reset/done/$',
auth_views.password_reset_done,
name='auth_password_reset_done'),
)
'''