title: ImproperlyConfigured at / 'ClientEventLogAdmin.exclude' refers to field 'created' that is missing from the form
body: <p>I am installing a django application module.I am getting this error.
  I started another MicroInstance and reinstalled everything but still I am getting this error.
  .</p>
  
  <pre><code>Environment:
  
  
  Request Method: GET
  Request URL: http://54.235.127.252/mds/
  
  Django Version: 1.3.1
  Python Version: 2.7.3
  Installed Applications:
  ['sana.mrs',
   'django.contrib.auth',
   'django.contrib.contenttypes',
   'django.contrib.sessions',
   'django.contrib.sites',
   'django.contrib.admin']
  Installed Middleware:
  ('django.middleware.common.CommonMiddleware',
   'django.contrib.sessions.middleware.SessionMiddleware',
   'django.contrib.auth.middleware.AuthenticationMiddleware',
   'sana.mrs.util.LoggingMiddleware')
  
  
  Traceback:
  File "/usr/lib/python2.7/dist-packages/django/core/handlers/base.py" in get_response
    101.                             request.path_info)
  File "/usr/lib/python2.7/dist-packages/django/core/urlresolvers.py" in resolve
    250.             for pattern in self.url_patterns:
  File "/usr/lib/python2.7/dist-packages/django/core/urlresolvers.py" in _get_url_patterns
    279.         patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
  File "/usr/lib/python2.7/dist-packages/django/core/urlresolvers.py" in _get_urlconf_module
    274.             self._urlconf_module = import_module(self.urlconf_name)
  File "/usr/lib/python2.7/dist-packages/django/utils/importlib.py" in import_module
    35.     __import__(name)
  File "/opt/sana/urls.py" in &lt;module&gt;
    12. admin.autodiscover()
  File "/usr/lib/python2.7/dist-packages/django/contrib/admin/__init__.py" in autodiscover
    26.             import_module('%s.admin' % app)
  File "/usr/lib/python2.7/dist-packages/django/utils/importlib.py" in import_module
    35.     __import__(name)
  File "/opt/sana/mrs/admin.py" in &lt;module&gt;
    26. admin.site.register(ClientEventLog, ClientEventLogAdmin)
  File "/usr/lib/python2.7/dist-packages/django/contrib/admin/sites.py" in register
    97.             validate(admin_class, model)
  File "/usr/lib/python2.7/dist-packages/django/contrib/admin/validation.py" in validate
    24.     validate_base(cls, model)
  File "/usr/lib/python2.7/dist-packages/django/contrib/admin/validation.py" in validate_base
    279.             check_formfield(cls, model, opts, 'exclude', field)
  File "/usr/lib/python2.7/dist-packages/django/contrib/admin/validation.py" in check_formfield
    369.                 "is missing from the form." % (cls.__name__, label, field))
  
  Exception Type: ImproperlyConfigured at /
  Exception Value: 'ClientEventLogAdmin.exclude' refers to field 'created' that is missing from the form.
  </code></pre>
  
  <p>Note:I just need to install this application.I am intermediate in python.and beginner in Django.But professional in PHP,mysql and front end with jQuery</p>