mumble error traceback

Environment:

Request Method: POST
Request URL: http://mdhosting.co.uk/mumble-django/admin/mumble/mumble/add/
Django Version: 1.2.3
Python Version: 2.6.6
Installed Applications:
['django.contrib.auth',
 'django.contrib.admin',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.sites',
 'registration',
 'mumble']
Installed Middleware:
('django.middleware.common.CommonMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.middleware.locale.LocaleMiddleware',
 '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/admin/options.py" in wrapper
  265.                 return self.admin_site.admin_view(view)(*args, **kwargs)
File "/usr/lib/pymodules/python2.6/django/utils/decorators.py" in _wrapped_view
  76.                     response = view_func(request, *args, **kwargs)
File "/usr/lib/pymodules/python2.6/django/views/decorators/cache.py" in _wrapped_view_func
  69.         response = view_func(request, *args, **kwargs)
File "/usr/lib/pymodules/python2.6/django/contrib/admin/sites.py" in inner
  190.             return view(request, *args, **kwargs)
File "/usr/lib/pymodules/python2.6/django/utils/decorators.py" in _wrapper
  21.             return decorator(bound_func)(*args, **kwargs)
File "/usr/lib/pymodules/python2.6/django/utils/decorators.py" in _wrapped_view
  76.                     response = view_func(request, *args, **kwargs)
File "/usr/lib/pymodules/python2.6/django/utils/decorators.py" in bound_func
  17.                 return func(self, *args2, **kwargs2)
File "/usr/lib/pymodules/python2.6/django/db/transaction.py" in _commit_on_success
  299.                     res = func(*args, **kw)
File "/usr/lib/pymodules/python2.6/django/contrib/admin/options.py" in add_view
  821.                 self.save_model(request, new_object, form, change=False)
File "/usr/lib/pymodules/python2.6/django/contrib/admin/options.py" in save_model
  623.         obj.save()
File "/usr/lib/pymodules/python2.6/mumble/models.py" in save
  283.         return models.Model.save( self )
File "/usr/lib/pymodules/python2.6/django/db/models/base.py" in save
  434.         self.save_base(using=using, force_insert=force_insert, force_update=force_update)
File "/usr/lib/pymodules/python2.6/django/db/models/base.py" in save_base
  542.                 created=(not record_exists), raw=raw)
File "/usr/lib/pymodules/python2.6/django/dispatch/dispatcher.py" in send
  162.             response = receiver(signal=self, sender=sender, **named)
File "/usr/lib/pymodules/python2.6/mumble/forms.py" in save_listener
  63.             self.save_to_model( self._update_inst )
File "/usr/lib/pymodules/python2.6/mumble/forms.py" in save_to_model
  70.                 setattr( inst, fldname, self.cleaned_data[fldname] )
File "/usr/lib/pymodules/python2.6/mumble/models.py" in __setattr__
  548.         models.Model.__setattr__( self, name, value )
File "/usr/lib/pymodules/python2.6/mumble/models.py" in setBooted
  234.                 self.ctl.start( self.srvid )
File "/usr/lib/pymodules/python2.6/mumble/MumbleCtlIce.py" in protection_wrapper
  64.             raise err

Exception Type: ServerFailureException at /admin/mumble/mumble/add/
Exception Value: exception ::Murmur::ServerFailureException
{
}