Python Django CMS博客错误“没有名为date_的模块”

我将django CMS与django CMS博客插件一起使用，但出现以下错误：

ImportError at /en/
No module named date_based

设置.py

MIDDLEWARE_CLASSES = (
    'django.middleware.common.CommonMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.doc.XViewMiddleware',
    'cms.middleware.page.CurrentPageMiddleware',
    'cms.middleware.user.CurrentUserMiddleware',
    'cms.middleware.toolbar.ToolbarMiddleware',
    'cms.middleware.language.LanguageCookieMiddleware',
    'cmsplugin_blog.middleware.MultilingualBlogEntriesMiddleware',
}

url.py

from django.conf.urls import patterns, include, url
from django.conf.urls.defaults import *
from django.conf.urls.i18n import i18n_patterns
from django.contrib import admin
from django.conf import settings

admin.autodiscover()

urlpatterns = i18n_patterns('',
    url(r'^admin/', include(admin.site.urls)),
    url(r'^', include('cms.urls')),
)

if settings.DEBUG:
    urlpatterns = patterns('',
    url(r'^media/(?P<path>.*)$', 'django.views.static.serve',
        {'document_root': settings.MEDIA_ROOT, 'show_indexes': True}),
    url(r'', include('django.contrib.staticfiles.urls')),
) + urlpatterns

并尝试从视图中扩展模式：

urlpatterns = i18n_patterns('django.views.generic.date_based',

---

FWIW，我在谷歌上搜索到“没有名为date_-based的模块”。是的，我看到了这一个，但不确定它是否能帮助我，除非是版本问题。以下是我的版本：python 2.7.1、django 1.5

urlpatterns = i18n_patterns('django.views.generic.date_based',