title: 'str' object has no attribute 'resolve' when access admin site
body: <p>I keep getting this error:
  'str' object has no attribute 'resolve'</p>
  
  <p>when trying to accessing the django admin site and I can't figure out
  why.
  I have apps within my project that have their own admin.py files.
  Could this cause it?
  here is my urls.py:</p>
  
  <pre><code>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)), 
  </code></pre>
  
  <p>...</p>
  
  <p>Heres the trace back:</p>
  
  <pre><code>'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]) 
  </code></pre>