Traceback (most recent call last):
  File "/usr/lib/python2.5/site-packages/CherryPy-2.3.0-py2.5.egg/cherrypy/_cphttptools.py", line 121, in _run
    self.main()
  File "/usr/lib/python2.5/site-packages/CherryPy-2.3.0-py2.5.egg/cherrypy/_cphttptools.py", line 264, in main
    body = page_handler(*virtual_path, **self.params)
  File "<string>", line 3, in user_save
  File "/usr/lib/python2.5/site-packages/TurboGears-1.0.4.3-py2.5.egg/turbogears/controllers.py", line 363, in expose
    *args, **kw)
  File "<string>", line 5, in run_with_transaction
  File "/usr/lib/python2.5/site-packages/TurboGears-1.0.4.3-py2.5.egg/turbogears/database.py", line 356, in so_rwt
    retval = func(*args, **kw)
  File "<string>", line 5, in _expose
  File "/usr/lib/python2.5/site-packages/TurboGears-1.0.4.3-py2.5.egg/turbogears/controllers.py", line 378, in <lambda>
    mapping, fragment, args, kw)))
  File "/usr/lib/python2.5/site-packages/TurboGears-1.0.4.3-py2.5.egg/turbogears/controllers.py", line 405, in _execute_func
    output = errorhandling.try_call(func, *args, **kw)
  File "/usr/lib/python2.5/site-packages/TurboGears-1.0.4.3-py2.5.egg/turbogears/errorhandling.py", line 72, in try_call
    return func(self, *args, **kw)
  File "<string>", line 3, in user_save
  File "/usr/lib/python2.5/site-packages/TurboGears-1.0.4.3-py2.5.egg/turbogears/identity/conditions.py", line 242, in require
    return fn(self, *args, **kwargs)
  File "<string>", line 3, in user_save
  File "/usr/lib/python2.5/site-packages/TurboGears-1.0.4.3-py2.5.egg/turbogears/controllers.py", line 170, in validate
    kw.update(form.validate(value, state))
  File "/usr/lib/python2.5/site-packages/TurboGears-1.0.4.3-py2.5.egg/turbogears/widgets/forms.py", line 1167, in validate
    return self.validator.to_python(value, state)
  File "/usr/lib/python2.5/site-packages/FormEncode-0.9-py2.5.egg/formencode/api.py", line 380, in to_python
    value = tp(value, state)
  File "/usr/lib/python2.5/site-packages/FormEncode-0.9-py2.5.egg/formencode/schema.py", line 153, in _to_python
    new[name] = validator.to_python(value, state)
  File "/usr/lib/python2.5/site-packages/TurboGears-1.0.4.3-py2.5.egg/turbogears/validators.py", line 201, in to_python
    return super(MultipleSelection, self).to_python(value, state)
  File "/usr/lib/python2.5/site-packages/FormEncode-0.9-py2.5.egg/formencode/api.py", line 380, in to_python
    value = tp(value, state)
  File "/usr/lib/python2.5/site-packages/FormEncode-0.9-py2.5.egg/formencode/compound.py", line 57, in _to_python
    to_python)
  File "/usr/lib/python2.5/site-packages/FormEncode-0.9-py2.5.egg/formencode/foreach.py", line 76, in attempt_convert
    sub_value = validate(validator, sub_value, state)
  File "/usr/lib/python2.5/site-packages/FormEncode-0.9-py2.5.egg/formencode/compound.py", line 15, in to_python
    return validator.to_python(value, state)
  File "/usr/lib/python2.5/site-packages/FormEncode-0.9-py2.5.egg/formencode/api.py", line 380, in to_python
    value = tp(value, state)
  File "/usr/lib/python2.5/site-packages/FormEncode-0.9-py2.5.egg/formencode/compound.py", line 57, in _to_python
    to_python)
  File "/usr/lib/python2.5/site-packages/FormEncode-0.9-py2.5.egg/formencode/compound.py", line 86, in attempt_convert
    raise lastException
TypeError: exceptions must be classes, instances, or strings (deprecated), not NoneType