"list index out of range" when trying to approve a team

[Daniel Holbach]

Environment:

Request Method: POST
Request URL: http://127.0.0.1:8000/manage/
Django Version: 1.2.3
Python Version: 2.6.6
Installed Applications:
['django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.admin',
 'reports',
 'django_openid_auth']
Installed Middleware:
('django.middleware.common.CommonMiddleware',
 'django.middleware.locale.LocaleMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware')

Traceback:
File "/usr/lib/pymodules/python2.6/django/core/handlers/base.py" in get_response
  100. response = callback(request, *callback_args, **callback_kwargs)
File "/usr/lib/pymodules/python2.6/django/contrib/auth/decorators.py" in _wrapped_view
  25. return view_func(request, *args, **kwargs)
File "/home/daniel/bzr/ubuntu-teamreports/teamreports/reports/views.py" in manage
  39. categories = CategoryFormSet(request.POST)
File "/usr/lib/pymodules/python2.6/django/forms/models.py" in __init__
  429. super(BaseModelFormSet, self).__init__(**defaults)
File "/usr/lib/pymodules/python2.6/django/forms/formsets.py" in __init__
  47. self._construct_forms()
File "/usr/lib/pymodules/python2.6/django/forms/formsets.py" in _construct_forms
  97. self.forms.append(self._construct_form(i))
File "/usr/lib/pymodules/python2.6/django/forms/models.py" in _construct_form
  453. kwargs['instance'] = self.get_queryset()[i]
File "/usr/lib/pymodules/python2.6/django/db/models/query.py" in __getitem__
  172. return self._result_cache[k]

Exception Type: IndexError at /manage/
Exception Value: list index out of range