Environment:


Request Method: GET
Request URL: http://127.0.0.1:8000/cadastro/pedido/8/

Django Version: 1.5.2
Python Version: 2.7.2
Installed Applications:
('django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.sites',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'django.contrib.admin',
 'django_evolution',
 'debug_toolbar',
 'pagination',
 'bootstrap_toolkit',
 'web_core')
Installed Middleware:
('django.middleware.common.CommonMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware',
 'django.middleware.clickjacking.XFrameOptionsMiddleware',
 'debug_toolbar.middleware.DebugToolbarMiddleware',
 'pagination.middleware.PaginationMiddleware',
 'pointlib.middleware.CustomerMiddleware')


Traceback:
File "/Library/Python/2.7/site-packages/django/core/handlers/base.py" in get_response
  115.                         response = callback(request, *callback_args, **callback_kwargs)
File "/Library/Python/2.7/site-packages/django/contrib/auth/decorators.py" in _wrapped_view
  25.                 return view_func(request, *args, **kwargs)
File "/Users/fellipeh/PycharmProjects/webconflex/cadastros/views.py" in EditaPedido
  196.                                                formset=BaseItensInlineFormSet)
File "/Library/Python/2.7/site-packages/django/forms/models.py" in inlineformset_factory
  855.     FormSet = modelformset_factory(model, **kwargs)
File "/Library/Python/2.7/site-packages/django/forms/models.py" in modelformset_factory
  694.                               can_order=can_order, can_delete=can_delete)
File "/Library/Python/2.7/site-packages/django/forms/formsets.py" in formset_factory
  381.     return type(form.__name__ + str('FormSet'), (formset,), attrs)

Exception Type: TypeError at /cadastro/pedido/8/
Exception Value: metaclass conflict: the metaclass of a derived class must be a (non-strict) subclass of the metaclasses of all its bases