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[Question #227400]: Saving event in admin screen throws Django exception about "MessageMiddleware"

 

New question #227400 on Graphite:
https://answers.launchpad.net/graphite/+question/227400

Version 0.9.10. A fresh install by someone 
I ran the /admin screen and tried to add an event via the entry page /admin/events/event. It threw the exception shown later. Please document what to create, or add it to the source. I assume it needs another INSTALLED_APPS entry.

Thanks for your time- Lance

Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/django/core/handlers/base.py", line 111, in get_response
    response = callback(request, *callback_args, **callback_kwargs)
  File "/usr/lib/python2.7/dist-packages/django/contrib/admin/options.py", line 366, in wrapper
    return self.admin_site.admin_view(view)(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/django/utils/decorators.py", line 91, in _wrapped_view
    response = view_func(request, *args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/django/views/decorators/cache.py", line 89, in _wrapped_view_func
    response = view_func(request, *args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/django/contrib/admin/sites.py", line 196, in inner
    return view(request, *args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/django/utils/decorators.py", line 25, in _wrapper
    return bound_func(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/django/utils/decorators.py", line 91, in _wrapped_view
    response = view_func(request, *args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/django/utils/decorators.py", line 21, in bound_func
    return func(self, *args2, **kwargs2)
  File "/usr/lib/python2.7/dist-packages/django/db/transaction.py", line 209, in inner
    return func(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/django/contrib/admin/options.py", line 958, in add_view
    return self.response_add(request, new_object)
  File "/usr/lib/python2.7/dist-packages/django/contrib/admin/options.py", line 791, in response_add
    self.message_user(request, msg)
  File "/usr/lib/python2.7/dist-packages/django/contrib/admin/options.py", line 696, in message_user
    messages.info(request, message)
  File "/usr/lib/python2.7/dist-packages/django/contrib/messages/api.py", line 78, in info
    fail_silently=fail_silently)
  File "/usr/lib/python2.7/dist-packages/django/contrib/messages/api.py", line 22, in add_message
    raise MessageFailure('You cannot add messages without installing '
MessageFailure: You cannot add messages without installing django.contrib.messages.middleware.MessageMiddleware

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