Django.core.exceptions.ImproperlyConfigured: AUTH_USER_MODEL относится к модели auth.User, которая не была установлена

После переноса моих пакетов django и userena, как показано ниже

Django 1.8 до Django 1.9.7

django-userena 1.4.1 to django-userena == 2.0.1

После запуска проекта я становлюсь ниже этой ошибки

Unhandled exception in thread started by <function wrapper at 0xb689641c>
Traceback (most recent call last):
File "/home/Documents/environments/venv/local/lib/python2.7/site-packages/django/utils/autoreload.py", line 226, in wrapper
fn(*args, **kwargs)
File "/home/Documents/environments/venv/local/lib/python2.7/site-packages/django/core/management/commands/runserver.py", line 116, in inner_run
self.check(display_num_errors=True)
File "/home/Documents/environments/venv/local/lib/python2.7/site-packages/django/core/management/base.py", line 426, in check
include_deployment_checks=include_deployment_checks,
File "/home/Documents/environments/venv/local/lib/python2.7/site-packages/django/core/checks/registry.py", line 75, in run_checks
new_errors = check(app_configs=app_configs)
File "/home/Documents/environments/venv/local/lib/python2.7/site-packages/django/core/checks/urls.py", line 13, in check_url_config
return check_resolver(resolver)
File "/home/Documents/environments/venv/local/lib/python2.7/site-packages/django/core/checks/urls.py", line 23, in check_resolver
for pattern in resolver.url_patterns:
File "/home/Documents/environments/venv/local/lib/python2.7/site-packages/django/utils/functional.py", line 33, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "/home/Documents/environments/venv/local/lib/python2.7/site-packages/django/core/urlresolvers.py", line 417, in url_patterns
patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
File "/home/Documents/environments/venv/local/lib/python2.7/site-packages/django/utils/functional.py", line 33, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "/home/Documents/environments/venv/local/lib/python2.7/site-packages/django/core/urlresolvers.py", line 410, in urlconf_module
return import_module(self.urlconf_name)
File "/usr/lib/python2.7/importlib/__init__.py", line 37, in import_module
__import__(name)
File "/home/Documents/swamy/sample_project/july/5/sample11/sampleapp/urls.py", line 28, in <module>
(r'^grappelli/', include('grappelli.urls')),
File "/home/Documents/environments/venv/local/lib/python2.7/site-packages/django/conf/urls/__init__.py", line 52, in include
urlconf_module = import_module(urlconf_module)
File "/usr/lib/python2.7/importlib/__init__.py", line 37, in import_module
__import__(name)
File "/home/Documents/environments/venv/local/lib/python2.7/site-packages/grappelli/urls.py", line 8, in <module>
from .views.switch import switch_user
File "/home/Documents/environments/venv/local/lib/python2.7/site-packages/grappelli/views/switch.py", line 18, in <module>
User = get_user_model()
File "/home/Documents/environments/venv/local/lib/python2.7/site-packages/django/contrib/auth/__init__.py", line 155, in get_user_model
"AUTH_USER_MODEL refers to model '%s' that has not been installed" % settings.AUTH_USER_MODEL

django.core.exceptions.ImproperlyConfigured: AUTH_USER_MODEL относится к модели auth.User, которая не установлена ​​

В файле настроек INSTALLED_APPS,

'grappelli.dashboard',
'grappelli',
'filebrowser',     
'django.contrib.admindocs',
'django.contrib.admin',
'django.contrib.auth',    
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.sites',
'django.contrib.staticfiles',  
'django.contrib.redirects',
'django.contrib.sitemaps',
'haystack',  
'memcache_status',   
'stheme',    
'home',
'customers',
'orders',
#'legacy',
'products',
'bloglets',
'utils',
'catax',
'sqls',
'quotes',    
#'django_stylus',
#'djgrid',
#'obdjects',
'quickpages', 
'loginas',
#'pyjade',
'django_countries',  
'debug_toolbar',
'djide',
#'dbtemplates',  
#'aloha',  # out temporarily, migrate to alternate https://github.com/ntucker/django-aloha-edit - JJW
'coffeescript',
'django_wysiwyg',
#'django_bfm',
'userena',
'guardian', 
#'apps',  
#'filer',
'easy_thumbnails', 
'taggit',
#'taggit_templatetags',
# 'social_auth',    
'social.apps.django_app.default', 
#'socialregistration',
#'socialregistration.contrib.linkedin',
'email_extras',
#'csvimport', 
'csvimport.app.CSVImportConf',  
'django_extensions',
'webshell',
'easy_select2',  
#'plata',
#'plata.contact', 
#'plata.discount',
#'plata.payment',
#'plata.shop',
'lastmodule',

Я думаю, что есть некоторые изменения в приложениях python. Но я не могу найти причину... Помогает ли кто-нибудь решить эту проблему?

Спасибо заранее!