traceback

Environment:

Request Method: GET
Request URL: http://127.0.0.1:8000/admin/oberlin/sourcearticle/8/
Django Version: 1.3 pre-alpha SVN-13431
Python Version: 2.6.1
Installed Applications:
['philo',
 'django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.sites',
 'django.contrib.messages',
 'django.contrib.admin',
 'django.contrib.markup',
 'django.contrib.comments',
 'oberlin',
 'staticmedia',
 'oberlin.assets',
 'philo.contrib.penfield',
 'pipettes']
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')


Template error:
In template /Users/srburrow/Source/django/contrib/admin/templates/admin/includes/fieldset.html, error at line 6
   Caught AttributeError while rendering: 'NoneType' object has no attribute 'label'
   1 : <fieldset class="module aligned {{ fieldset.classes }}">


   2 :     {% if fieldset.name %}<h2>{{ fieldset.name }}</h2>{% endif %}


   3 :     {% if fieldset.description %}


   4 :         <div class="description">{{ fieldset.description|safe }}</div>


   5 :     {% endif %}


   6 :      {% for line in fieldset %} 


   7 :         <div class="form-row{% if line.errors %} errors{% endif %}{% for field in line %} {{ field.field.name }}{% endfor %}">


   8 :             {{ line.errors }}


   9 :             {% for field in line %}


   10 :                 <div{% if not line.fields|length_is:"1" %} class="field-box"{% endif %}>


   11 :                     {% if field.is_checkbox %}


   12 :                         {{ field.field }}{{ field.label_tag }}


   13 :                     {% else %}


   14 :                         {{ field.label_tag }}


   15 :                         {% if field.is_readonly %}


   16 :                             <p>{{ field.contents }}</p>


Traceback:
File "/Users/srburrow/Source/django/core/handlers/base.py" in get_response
  100.                     response = callback(request, *callback_args, **callback_kwargs)
File "/Users/srburrow/Source/django/contrib/admin/options.py" in wrapper
  239.                 return self.admin_site.admin_view(view)(*args, **kwargs)
File "/Users/srburrow/Source/django/utils/decorators.py" in _wrapped_view
  76.                     response = view_func(request, *args, **kwargs)
File "/Users/srburrow/Source/django/views/decorators/cache.py" in _wrapped_view_func
  69.         response = view_func(request, *args, **kwargs)
File "/Users/srburrow/Source/django/contrib/admin/sites.py" in inner
  190.             return view(request, *args, **kwargs)
File "/Users/srburrow/Source/django/utils/decorators.py" in _wrapper
  21.             return decorator(bound_func)(*args, **kwargs)
File "/Users/srburrow/Source/django/utils/decorators.py" in _wrapped_view
  76.                     response = view_func(request, *args, **kwargs)
File "/Users/srburrow/Source/django/utils/decorators.py" in bound_func
  17.                 return func(self, *args2, **kwargs2)
File "/Users/srburrow/Source/django/db/transaction.py" in _commit_on_success
  299.                     res = func(*args, **kw)
File "/Users/srburrow/Source/django/contrib/admin/options.py" in change_view
  943.         return self.render_change_form(request, context, change=True, obj=obj)
File "/Users/srburrow/Source/django/contrib/admin/options.py" in render_change_form
  634.         ], context, context_instance=context_instance)
File "/Users/srburrow/Source/django/shortcuts/__init__.py" in render_to_response
  20.     return HttpResponse(loader.render_to_string(*args, **kwargs), **httpresponse_kwargs)
File "/Users/srburrow/Source/django/template/loader.py" in render_to_string
  186.     return t.render(context_instance)
File "/Users/srburrow/Source/django/template/__init__.py" in render
  173.             return self._render(context)
File "/Users/srburrow/Source/django/template/__init__.py" in _render
  167.         return self.nodelist.render(context)
File "/Users/srburrow/Source/django/template/__init__.py" in render
  796.                 bits.append(self.render_node(node, context))
File "/Users/srburrow/Source/django/template/debug.py" in render_node
  72.             result = node.render(context)
File "/Users/srburrow/Source/django/template/loader_tags.py" in render
  125.         return compiled_parent._render(context)
File "/Users/srburrow/Source/django/template/__init__.py" in _render
  167.         return self.nodelist.render(context)
File "/Users/srburrow/Source/django/template/__init__.py" in render
  796.                 bits.append(self.render_node(node, context))
File "/Users/srburrow/Source/django/template/debug.py" in render_node
  72.             result = node.render(context)
File "/Users/srburrow/Source/django/template/loader_tags.py" in render
  125.         return compiled_parent._render(context)
File "/Users/srburrow/Source/django/template/__init__.py" in _render
  167.         return self.nodelist.render(context)
File "/Users/srburrow/Source/django/template/__init__.py" in render
  796.                 bits.append(self.render_node(node, context))
File "/Users/srburrow/Source/django/template/debug.py" in render_node
  72.             result = node.render(context)
File "/Users/srburrow/Source/django/template/loader_tags.py" in render
  62.             result = block.nodelist.render(context)
File "/Users/srburrow/Source/django/template/__init__.py" in render
  796.                 bits.append(self.render_node(node, context))
File "/Users/srburrow/Source/django/template/debug.py" in render_node
  72.             result = node.render(context)
File "/Users/srburrow/Source/django/template/defaulttags.py" in render
  167.                 nodelist.append(node.render(context))
File "/Users/srburrow/Source/django/template/loader_tags.py" in render
  139.             return self.template.render(context)
File "/Users/srburrow/Source/django/template/__init__.py" in render
  173.             return self._render(context)
File "/Users/srburrow/Source/django/template/__init__.py" in _render
  167.         return self.nodelist.render(context)
File "/Users/srburrow/Source/django/template/__init__.py" in render
  796.                 bits.append(self.render_node(node, context))
File "/Users/srburrow/Source/django/template/debug.py" in render_node
  72.             result = node.render(context)
File "/Users/srburrow/Source/django/template/defaulttags.py" in render
  167.                 nodelist.append(node.render(context))
File "/Users/srburrow/Source/django/template/defaulttags.py" in render
  137.             values = list(values)
File "/Users/srburrow/Source/django/contrib/admin/helpers.py" in __iter__
  106.                 yield AdminField(self.form, field, is_first=(i == 0))
File "/Users/srburrow/Source/django/contrib/admin/helpers.py" in __init__
  113.         self.field = form[field] # A django.forms.BoundField instance
File "/Users/srburrow/Source/django/forms/forms.py" in __getitem__
  107.         return BoundField(self, field, name)
File "/Users/srburrow/Source/django/forms/forms.py" in __init__
  398.         if self.field.label is None:

Exception Type: TemplateSyntaxError at /admin/oberlin/sourcearticle/8/
Exception Value: Caught AttributeError while rendering: 'NoneType' object has no attribute 'label'