title: Django 1.8 LookupError : Model not registered AUTH_USER_MODEL
body: <p>Django 1.8 and Python 3.4</p>
  
  <p>I'm using a custom User model called <code>UploaderClient</code> in my app called <code>authenticateclients</code> . When I run <code>check</code> or <code>makemigrations</code> or <code>migrate</code> I get a <code>LookupError: Model 'authenticateclients.UploaderClient' not registered.</code> error. Please help.</p>
  
  <p>In settings.py I have defined <code>AUTH_USER_MODEL</code> as <code>authenticateclients.UploaderClient</code></p>
  
  <p><strong>authenticateclients/models.py</strong></p>
  
  <pre class="lang-py prettyprint-override"><code>    from django.db import models
      from django.contrib.auth.models import AbstractBaseUser, BaseUserManager
  
      # Create your models here.
  
     class UploaderClientManager(BaseUserManager):
         def create_user(self, accountname, password=None, **kwargs):
             if not accountname:
                 raise ValueError('Users must have a valid accountname.')
  
             if not kwargs.get('email'):
                 raise ValueError('Users must have a valid email.')
  
             if not kwargs.get('company_name'):
                 raise ValueError('Users must have a valid company name.')
  
             account = self.model(
                 accountname=self.normalize_accountname(accountname),email=kwargs.get('email'), company_name=kwargs.get('company_name')
             )
  
             account.set_password(password)
             account.save()
  
             return account
  
         def create_superuser(self, accountname, password, **kwargs):
             account = self.create_user(accountname, password, **kwargs)
  
             account.is_admin = True
             account.save()
  
             return account
  
  
     class UploaderClient(AbstractBaseUser):
         email = models.EmailField()
         accountname = models.CharField(max_length=100, unique=True)
         company_name = models.CharField(max_length=100)
         vuforiadb_name = models.CharField(max_length=100, blank=True)
  
         is_admin = models.BooleanField(default=False)
  
         created_at = models.DateTimeField(auto_now_add=True)
         updated_at = models.DateTimeField(auto_now=True)
  
         objects = UploaderClientManager()
  
         USERNAME_FIELD = 'accountname'
         REQUIRED_FIELDS = ['email','company_name']
  
         def __unicode__(self):
             return self.accountname
  
         def get_company_name(self):
             return self.company_name
  
         def get_vuforiadb_name(self):
             return self.vuforiadb_name
  </code></pre>
  
  <p><strong>settings.py</strong></p>
  
  <pre class="lang-py prettyprint-override"><code>"""
  Django settings for ARPixelSite project.
  
  Generated by 'django-admin startproject' using Django 1.8.6.
  
  For more information on this file, see
  https://docs.djangoproject.com/en/1.8/topics/settings/
  
  For the full list of settings and their values, see
  https://docs.djangoproject.com/en/1.8/ref/settings/
  """
  
  # -*- coding: utf-8 -*-
  # Build paths inside the project like this: os.path.join(BASE_DIR, ...)
  import os
  
  gettext = lambda s: s
  
  BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
  
  
  # Quick-start development settings - unsuitable for production
  # See https://docs.djangoproject.com/en/1.8/howto/deployment/checklist/
  
  # SECURITY WARNING: keep the secret key used in production secret!
  SECRET_KEY = '@-$h5gh5%s$70hd=ii55it!+4@a*u8b(c8aqumqkx@*m8%v89l'
  
  # SECURITY WARNING: don't run with debug turned on in production!
  DEBUG = True
  
  ALLOWED_HOSTS = []
  
  
  # Application definition
  
  INSTALLED_APPS = (
      'djangocms_admin_style',  # for the admin skin. You **must** add 'djangocms_admin_style' in the list **before** 'django.contrib.admin'.
      'django.contrib.admin',
      'django.contrib.auth',
      'django.contrib.contenttypes',
      'django.contrib.sessions',
      'django.contrib.messages',
      'django.contrib.staticfiles',
      'django.contrib.sites',
      'cms',  # django CMS itself
      'treebeard',  # utilities for implementing a tree
      'menus',  # helper for model independent hierarchical website navigation
      #'south',  # Only needed for Django &lt; 1.7
      'sekizai',  # for javascript and css management
      'djangocms_file',
      'djangocms_flash',
      'djangocms_googlemap',
      'djangocms_inherit',
      'djangocms_picture',
      'djangocms_teaser',
      'djangocms_video',
      'djangocms_link',
      'djangocms_snippet',
      'rest_framework',
      'clientupload',
      'authenticateclients',
  )
  
  MIDDLEWARE_CLASSES = (
      'django.contrib.sessions.middleware.SessionMiddleware',
      'django.middleware.common.CommonMiddleware',
      'django.middleware.csrf.CsrfViewMiddleware',
      'django.contrib.auth.middleware.AuthenticationMiddleware',
      'django.contrib.auth.middleware.SessionAuthenticationMiddleware',
      'django.contrib.messages.middleware.MessageMiddleware',
      'django.middleware.locale.LocaleMiddleware',
      'django.middleware.clickjacking.XFrameOptionsMiddleware',
      'django.middleware.security.SecurityMiddleware',
      'cms.middleware.user.CurrentUserMiddleware',
      'cms.middleware.page.CurrentPageMiddleware',
      'cms.middleware.toolbar.ToolbarMiddleware',
      'cms.middleware.language.LanguageCookieMiddleware',
  )
  
  ROOT_URLCONF = 'ARPixelSite.urls'
  
  TEMPLATES = [
      {
          'BACKEND': 'django.template.backends.django.DjangoTemplates',
          'DIRS': [os.path.join(BASE_DIR, "templates")],
          'APP_DIRS': True,
          'OPTIONS': {
              'context_processors': [
                  'django.template.context_processors.debug',
                  'django.template.context_processors.request',
                  'django.contrib.auth.context_processors.auth',
                  'django.contrib.messages.context_processors.messages',
                  'django.core.context_processors.i18n',
                  'django.core.context_processors.request',
                  'django.core.context_processors.media',
                  'django.core.context_processors.static',
                  'sekizai.context_processors.sekizai',
                  'cms.context_processors.cms_settings',
              ],
          },
      },
  ]
  
  WSGI_APPLICATION = 'ARPixelSite.wsgi.application'
  
  
  # Database
  # https://docs.djangoproject.com/en/1.8/ref/settings/#databases
  
  DATABASES = {
      'default': {
          'ENGINE': 'django.db.backends.mysql',
          'NAME': 'ARPixelDB',
          'USER': 'djangouser',
          'PASSWORD': 'djangouser',
          'HOST': '127.0.0.1',
          'PORT': '3306',
      }
  }
  
  REST_FRAMEWORK = {
      'DEFAULT_AUTHENTICATION_CLASSES': (
          'rest_framework.authentication.SessionAuthentication',
      )
  }
  
  """
  TEMPLATE_DIRS = (
      # The docs say it should be absolute path: BASE_DIR is precisely one.
      # Life is wonderful!
      os.path.join(BASE_DIR, "templates"),
  )
  """
  
  CMS_TEMPLATES = (
      ('template_1.html', 'Template One'),
      ('template_2.html', 'Template Two'),
  )
  
  LANGUAGES = [
      ('en', 'English'),
  ]
  
  # Internationalization
  # https://docs.djangoproject.com/en/1.8/topics/i18n/
  
  LANGUAGE_CODE = 'en'
  
  TIME_ZONE = 'UTC'
  
  USE_I18N = True
  
  USE_L10N = True
  
  USE_TZ = True
  
  SITE_ID = 1
  
  # Static files (CSS, JavaScript, Images)
  # https://docs.djangoproject.com/en/1.8/howto/static-files/
  
  STATIC_ROOT = os.path.join(BASE_DIR, "static")
  STATIC_URL = '/static/'
  
  MEDIA_ROOT = os.path.join(BASE_DIR, "media")
  MEDIA_URL = "/media/"
  
  CMS_PAGE_MEDIA_PATH = os.path.join(MEDIA_ROOT, "cms_page_media")
  
  AUTH_USER_MODEL = 'authenticateclients.UploaderClient'
  </code></pre>
  
  <p>When I run <code>check</code> or <code>makemigrations</code> or <code>migrate</code> I get</p>
  
  <pre class="lang-py prettyprint-override"><code>/home/dip7777/Desktop/ARPixelEnv/lib/python3.4/importlib/_bootstrap.py:321: RemovedInDjango19Warning: django.utils.importlib will be removed in Django 1.9.
    return f(*args, **kwds)
  
  Traceback (most recent call last):
    File "manage.py", line 10, in &lt;module&gt;
      execute_from_command_line(sys.argv)
    File "/home/dip7777/Desktop/ARPixelEnv/lib/python3.4/site-packages/django/core/management/__init__.py", line 354, in execute_from_command_line
      utility.execute()
    File "/home/dip7777/Desktop/ARPixelEnv/lib/python3.4/site-packages/django/core/management/__init__.py", line 328, in execute
      django.setup()
    File "/home/dip7777/Desktop/ARPixelEnv/lib/python3.4/site-packages/django/__init__.py", line 18, in setup
      apps.populate(settings.INSTALLED_APPS)
    File "/home/dip7777/Desktop/ARPixelEnv/lib/python3.4/site-packages/django/apps/registry.py", line 108, in populate
      app_config.import_models(all_models)
    File "/home/dip7777/Desktop/ARPixelEnv/lib/python3.4/site-packages/django/apps/config.py", line 198, in import_models
      self.models_module = import_module(models_module_name)
    File "/home/dip7777/Desktop/ARPixelEnv/lib/python3.4/importlib/__init__.py", line 109, in import_module
      return _bootstrap._gcd_import(name[level:], package, level)
    File "&lt;frozen importlib._bootstrap&gt;", line 2254, in _gcd_import
    File "&lt;frozen importlib._bootstrap&gt;", line 2237, in _find_and_load
    File "&lt;frozen importlib._bootstrap&gt;", line 2226, in _find_and_load_unlocked
    File "&lt;frozen importlib._bootstrap&gt;", line 1200, in _load_unlocked
    File "&lt;frozen importlib._bootstrap&gt;", line 1129, in _exec
    File "&lt;frozen importlib._bootstrap&gt;", line 1471, in exec_module
    File "&lt;frozen importlib._bootstrap&gt;", line 321, in _call_with_frames_removed
    File "/home/dip7777/Desktop/ARPixelEnv/lib/python3.4/site-packages/cms/models/__init__.py", line 4, in &lt;module&gt;
      from .permissionmodels import *  # nopyflakes
    File "/home/dip7777/Desktop/ARPixelEnv/lib/python3.4/site-packages/cms/models/permissionmodels.py", line 29, in &lt;module&gt;
      User = apps.get_registered_model(user_app_name, user_model_name)
    File "/home/dip7777/Desktop/ARPixelEnv/lib/python3.4/site-packages/django/apps/registry.py", line 266, in get_registered_model
      "Model '%s.%s' not registered." % (app_label, model_name))
  LookupError: Model 'authenticateclients.UploaderClient' not registered.
  </code></pre>
  
  <p>So what I did is comment the line </p>
  
  <pre class="lang-py prettyprint-override"><code>AUTH_USER_MODEL = 'authenticateclients.UploaderClient'
  </code></pre>
  
  <p>and run <code>makemigrations</code> and <code>migrate</code>.
  The migrations were applied.
  Then on uncommenting the above line and trying <code>check</code> or <code>makemigrations</code> or <code>migrate</code> I'm still getting the same error.</p>
  
  <p>Please help with the error.
  If it is not possible to fix, can I proceed with my Project by commenting out the line or will the authentication not work if I leave out the line..</p>