Django 'Umfragen' ist nicht einen registrierten Namensraum

Lerne ich Django von [DIESEM][1] - tutorial. Alles war perfekt bis zu diesem Schritt:

Jetzt ändern Sie Ihre polls/index.html Vorlage aus:

<li><a href="{% url 'detail' poll.id %}">{{ poll.question }}</a></li>

Punkt, an dem Namespace detail-Ansicht:

<li><a href="{% url 'polls:detail' poll.id %}">{{ poll.question }}</a></li>

Sehen Sie den gesamten Abschnitt [HIER][2].

Und das ist, was passiert ist, nachdem ich änderte 'detail' in 'Umfragen:detail':

NoReverseMatch at /polls/
'polls' is not a registered namespace
Request Method: GET
Request URL:    http://127.0.0.1:8000/polls/
Django Version: 1.6.4
Exception Type: NoReverseMatch
Exception Value:    
'polls' is not a registered namespace
Exception Location: D:\Programy\Python 3.4\lib\site-packages\django\core\urlresolvers.py in reverse, line 528
Python Executable:  D:\Programy\Python 3.4\python.exe
Python Version: 3.4.0
Python Path:    
['D:\\dziango\\strona1',
 'D:\\Programy\\Python 3.4\\python34.zip',
 'D:\\Programy\\Python 3.4\\DLLs',
 'D:\\Programy\\Python 3.4\\lib',
 'D:\\Programy\\Python 3.4',
 'D:\\Programy\\Python 3.4\\lib\\site-packages']
Server time:    Wed, 21 May 2014 16:36:13 +0200

und hier ist mein Traceback:

Environment:


Request Method: GET
Request URL: http://127.0.0.1:8000/polls/

Django Version: 1.6.4
Python Version: 3.4.0
Installed Applications:
('django.contrib.admin',
 'django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'polls')
Installed Middleware:
('django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.common.CommonMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware',
 'django.middleware.clickjacking.XFrameOptionsMiddleware')


Template error:
In template D:\dziango\strona1\polls\templates\polls\index.html, error at line 1
   'polls' is not a registered namespace
   1 : {% if latest_poll_list %}
    <ul>
    {% for poll in latest_poll_list %}
        <li><a href=" {% url 'polls:detail' poll.id %} ">{{ poll.question }}</a></li>
    {% endfor %}
    </ul>
{% else %}
    <p>Nie ma ankiet.</p>
{% endif %}

Traceback:
File "D:\Programy\Python 3.4\lib\site-packages\django\core\handlers\base.py" in get_response
  114.                     response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "D:\dziango\strona1\polls\views.py" in index
  11.     return render(request, 'polls/index.html', context)
File "D:\Programy\Python 3.4\lib\site-packages\django\shortcuts\__init__.py" in render
  53.     return HttpResponse(loader.render_to_string(*args, **kwargs),
File "D:\Programy\Python 3.4\lib\site-packages\django\template\loader.py" in render_to_string
  169.         return t.render(context_instance)
File "D:\Programy\Python 3.4\lib\site-packages\django\template\base.py" in render
  140.             return self._render(context)
File "D:\Programy\Python 3.4\lib\site-packages\django\template\base.py" in _render
  134.         return self.nodelist.render(context)
File "D:\Programy\Python 3.4\lib\site-packages\django\template\base.py" in render
  840.                 bit = self.render_node(node, context)
File "D:\Programy\Python 3.4\lib\site-packages\django\template\debug.py" in render_node
  78.             return node.render(context)
File "D:\Programy\Python 3.4\lib\site-packages\django\template\defaulttags.py" in render
  305.                 return nodelist.render(context)
File "D:\Programy\Python 3.4\lib\site-packages\django\template\base.py" in render
  840.                 bit = self.render_node(node, context)
File "D:\Programy\Python 3.4\lib\site-packages\django\template\debug.py" in render_node
  78.             return node.render(context)
File "D:\Programy\Python 3.4\lib\site-packages\django\template\defaulttags.py" in render
  196.                         nodelist.append(node.render(context))
File "D:\Programy\Python 3.4\lib\site-packages\django\template\defaulttags.py" in render
  447.                         six.reraise(*exc_info)
File "D:\Programy\Python 3.4\lib\site-packages\django\utils\six.py" in reraise
  550.         raise value
File "D:\Programy\Python 3.4\lib\site-packages\django\template\defaulttags.py" in render
  433.             url = reverse(view_name, args=args, kwargs=kwargs, current_app=context.current_app)
File "D:\Programy\Python 3.4\lib\site-packages\django\core\urlresolvers.py" in reverse
  528.                                          key)

Exception Type: NoReverseMatch at /polls/
Exception Value: 'polls' is not a registered namespace

Ich habe versucht, jede einzelne Lösung von [DIESEM][3] ähnliches Thema, aber keiner von Ihnen arbeitet für mich.
Ich glaube nicht, füge meinen code hier, weil ich schrieb es alle aus dem tutorial und es ist genau das gleiche. Alles, was ich Tat war getan Schritt für Schritt nach.
Wenn Sie aber meinen code sowieso, bitte sagen und ich werde es hier zu setzen.

Sorry für mein Englisch.

== EDIT ==
hier ist mein root urls.py Datei:

from django.conf.urls import patterns, url, include

from django.contrib import admin
admin.autodiscover()

urlpatterns = patterns('',
    url(r'^polls/', include('polls.urls', namespace="polls")),
    url(r'^admin/', include(admin.site.urls)),
)

- und dies ist polls/views.py:

from django.shortcuts import render, get_object_or_404
from django.http import HttpResponse, HttpResponseRedirect
from django.core.urlresolvers import reverse

from polls.models import Choice, Poll

# Create your views here.
def index(request):
    latest_poll_list = Poll.objects.order_by('-pub_date')[:5]
    context = {'latest_poll_list': latest_poll_list }
    return render(request, 'polls/index.html', context)

def detail(request, poll_id):
    poll = get_object_or_404(Poll, pk=poll_id)
    return render(request, 'polls/detail.html', {'poll':poll})

def results(request, poll_id):
    return HttpResponse("Wyniki ankiety %s!" %poll_id)

def vote(request, poll_id):
    p = get_object_or_404(Poll, pk=poll_id)
    try:
        selected_choice = p.choice_set.get(pk=request.POST['choice'])
    except (KeyError, Choice.DoesNotExist):
        # Redisplay the poll voting form
        return render(request, 'polls/detail.html', {
            'poll':p,
            'error_message':"Nie wybrałeś żadnej opcji.",
            })
    else:
        selected_choice.votes += 1
        selected_choice.save()
    return HttpResponse(reverse('polls:results', args=(p.id,)))

polls/urls.py:

from django.conf.urls import patterns, url

from polls import views


urlpatterns = patterns('',
    # ex: /polls/
    url(r'^$', views.index, name='index'),
    # ex: /polls/5/
    url(r'^(?P<poll_id>\d+)/$', views.detail, name='detail'),
    # ex: /polls/5/results
    url(r'^(?P<poll_id>\d+)/results/$', views.results, name='results'),
    # ex: /polls/5/vote
    url(r'^(?P<poll_id>\d+)/vote/$', views.vote, name='vote'),
)

UPDATE:
Okay, ich habe einen dummen Fehler, indem ich urls.py im falschen Verzeichnis.. sorry