def removeAdmin(self, data):
    for properties in data:

      if 'profile_key' not in properties:
        logging.warning("Missing key in '%s'", properties)
        continue
      profile_key = properties['profile_key']

      if 'program_key' not in properties:
        logging.warning("Missing key in '%s'", properties)
        continue
      program_key = properties['program_key']

      @ndb.transactional
      def remove_admin_txn():
        #program_key_new=program_key
        logging.error(program_key)
	logging.error(profile_key)
        program_key_new = ndb.Key.from_old_key(program_key)

        program = program_key_new.get()

        if not program:
          logging.warning("Invalid program_key '%s'", program_key_new)
          return

        profile = profile_key.get()

        if not profile:
          logging.warning("Invalid profile_key '%s'", profile_key)
          return

        user=user_model.User.query(user_model.User.key.id() == profile.key.id()).get()

        if program in user.host_for:
	  user.host_for.remove(program_key_new)
	  user.put()

      remove_admin_txn()

    return True

STACK TRACE:
ERROR    2014-03-01 22:48:42,464 gae_django.py:33] Exception in request:
Traceback (most recent call last):
  File "/home/kira111/shikher111-melange-soc/thirdparty/google_appengine/lib/django-1.5/django/core/handlers/base.py", line 115, in get_response
    response = callback(request, *callback_args, **callback_kwargs)
  File "/home/kira111/shikher111-melange-soc/build/soc/views/base.py", line 482, in __call__
    return self._dispatch(data, check, mutator)
  File "/home/kira111/shikher111-melange-soc/build/soc/views/base.py", line 439, in _dispatch
    return self.post(data, check, mutator)
  File "/home/kira111/shikher111-melange-soc/build/soc/modules/gsoc/views/program.py", line 397, in post
    if ProgramAdminsList(data.request, data, links.SOC_LINKER, urls.UrlNames).post():
  File "/home/kira111/shikher111-melange-soc/build/soc/modules/gsoc/views/program.py", line 303, in post
    return self.removeAdmin(parsed)
  File "/home/kira111/shikher111-melange-soc/build/soc/modules/gsoc/views/program.py", line 346, in removeAdmin
    remove_admin_txn()
  File "/home/kira111/shikher111-melange-soc/thirdparty/google_appengine/google/appengine/ext/ndb/utils.py", line 173, in inner_wrapper
    return wrapped_decorator(func, args, kwds, **options)
  File "/home/kira111/shikher111-melange-soc/thirdparty/google_appengine/google/appengine/ext/ndb/model.py", line 3611, in transactional
    func, args, kwds, **options).get_result()
  File "/home/kira111/shikher111-melange-soc/thirdparty/google_appengine/google/appengine/ext/ndb/tasklets.py", line 325, in get_result
    self.check_success()
  File "/home/kira111/shikher111-melange-soc/thirdparty/google_appengine/google/appengine/ext/ndb/tasklets.py", line 371, in _help_tasklet_along
    value = gen.send(val)
  File "/home/kira111/shikher111-melange-soc/thirdparty/google_appengine/google/appengine/ext/ndb/context.py", line 937, in transaction
    result = callback()
  File "/home/kira111/shikher111-melange-soc/build/soc/modules/gsoc/views/program.py", line 326, in remove_admin_txn
    program_key_new = ndb.Key.from_old_key(program_key)
  File "/home/kira111/shikher111-melange-soc/thirdparty/google_appengine/google/appengine/ext/ndb/key.py", line 583, in from_old_key
    return cls(urlsafe=str(old_key))
  File "/home/kira111/shikher111-melange-soc/thirdparty/google_appengine/google/appengine/ext/ndb/key.py", line 212, in __new__
    self.__reference = _ConstructReference(cls, **kwargs)
  File "/home/kira111/shikher111-melange-soc/thirdparty/google_appengine/google/appengine/ext/ndb/utils.py", line 136, in positional_wrapper
    return wrapped(*args, **kwds)
  File "/home/kira111/shikher111-melange-soc/thirdparty/google_appengine/google/appengine/ext/ndb/key.py", line 640, in _ConstructReference
    serialized = _DecodeUrlSafe(urlsafe)
  File "/home/kira111/shikher111-melange-soc/thirdparty/google_appengine/google/appengine/ext/ndb/key.py", line 790, in _DecodeUrlSafe
    return base64.b64decode(urlsafe.replace('-', '+').replace('_', '/'))
  File "/usr/lib/python2.7/base64.py", line 76, in b64decode
    raise TypeError(msg)
TypeError: Incorrect padding