Just visit <url>/account/atlassian/signin/

Signing in actually works, but visiting the URL hits that error.

Environment:

Request Method: GET
Request URL: http://answers-development.atlassian.com/account/atlassian/signin/
Django Version: 1.2.5
Python Version: 2.6.5
Installed Applications:
['django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.sites',
'django.contrib.admin',
'django.contrib.humanize',
'django.contrib.sitemaps',
'django.contrib.markup',
'forum',
'debug_toolbar',
'south',
'imagekit']
Installed Middleware:
['django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.common.CommonMiddleware',
'forum.middleware.extended_user.ExtendedUser',
'forum.middleware.anon_user.ConnectToSessionMessagesMiddleware',
'forum.middleware.request_utils.RequestUtils',
'forum.middleware.cancel.CancelActionMiddleware',
'django.middleware.transaction.TransactionMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'dogslow.WatchdogMiddleware',
'debug_toolbar.middleware.DebugToolbarMiddleware']

Traceback:
File "/opt/python/domains/atlassian.com/osqa-development/lib/python2.6/site-packages/django/core/handlers/base.py" in get_response
100. response = callback(request, *callback_args, **callback_kwargs)
File "/opt/python/domains/atlassian.com/osqa-development/answers/forum/views/auth.py" in prepare_provider_signin
96. return process_provider_signin(request, provider)
File "/opt/python/domains/atlassian.com/osqa-development/answers/forum/views/auth.py" in process_provider_signin
110. assoc_key = provider_class.process_authentication_request(request)
File "/opt/python/domains/atlassian.com/osqa-development/answers/forum_modules/atlassianauth/authentication.py" in process_authentication_request
38. username=(request.POST['username'].strip()).lower()
File "/opt/python/domains/atlassian.com/osqa-development/lib/python2.6/site-packages/django/utils/datastructures.py" in _getitem_
235. raise MultiValueDictKeyError("Key %r not found in %r" % (key, self))

Exception Type: MultiValueDictKeyError at /account/atlassian/signin/
Exception Value: "Key 'username' not found in <QueryDict: {}>"