gistfile1.txt

2014-01-06 15:38:40,289 ERROR 2001 [django.request] base.py:215 - Internal Server Error: /courses/Harvard/HC/January/courseware/69eaa100718542faab5ea1d56ac86ce8/8b3507f44ddd4d968a7c1bf5a3e41e6c/
Traceback (most recent call last):
  File "/edx/app/edxapp/venvs/edxapp/local/lib/python2.7/site-packages/django/core/handlers/base.py", line 111, in get_response
    response = callback(request, *callback_args, **callback_kwargs)
  File "/edx/app/edxapp/venvs/edxapp/local/lib/python2.7/site-packages/django/contrib/auth/decorators.py", line 20, in _wrapped_view
    return view_func(request, *args, **kwargs)
  File "/edx/app/edxapp/venvs/edxapp/local/lib/python2.7/site-packages/django/utils/decorators.py", line 91, in _wrapped_view
    response = view_func(request, *args, **kwargs)
  File "/edx/app/edxapp/venvs/edxapp/local/lib/python2.7/site-packages/django/views/decorators/cache.py", line 75, in _cache_controlled
    response = viewfunc(request, *args, **kw)
  File "/edx/app/edxapp/edx-platform/lms/djangoapps/courseware/views.py", line 311, in index
    course_id, user, section_descriptor, depth=None)
  File "/edx/app/edxapp/edx-platform/lms/djangoapps/courseware/model_data.py", line 110, in cache_for_descriptor_descendents
    return FieldDataCache(descriptors, course_id, user, select_for_update)
  File "/edx/app/edxapp/edx-platform/lms/djangoapps/courseware/model_data.py", line 67, in __init__
    for field_object in self._retrieve_fields(scope, fields):
  File "/edx/app/edxapp/edx-platform/lms/djangoapps/courseware/model_data.py", line 160, in _retrieve_fields
    set(descriptor.module_class.__name__ for descriptor in self.descriptors),
  File "/edx/app/edxapp/edx-platform/lms/djangoapps/courseware/model_data.py", line 160, in <genexpr>
    set(descriptor.module_class.__name__ for descriptor in self.descriptors),
AttributeError: 'MentoringBlockWithMixins' object has no attribute 'module_class'