base_report_creator error if no operator selected

branch-server 1787
branch-addons 2331
if no operator for filter condition is selected
Traceback (most recent call last):
  File "/home/terp/OpenERP/branch/server/5.0/bin/netsvc.py", line 235, in dispatch
    result = LocalService(service_name)(method, *params)
  File "/home/terp/OpenERP/branch/server/5.0/bin/netsvc.py", line 74, in __call__
    return getattr(self, method)(*params)
  File "/home/terp/OpenERP/branch/server/5.0/bin/service/web_services.py", line 582, in execute
    return self._execute(db, uid, wiz_id, datas, action, context)
  File "/home/terp/OpenERP/branch/server/5.0/bin/service/web_services.py", line 562, in _execute
    return wiz.execute(db, uid, self.wiz_datas[wiz_id], action, context)
  File "/home/terp/OpenERP/branch/server/5.0/bin/wizard/__init__.py", line 178, in execute
    res = self.execute_cr(cr, uid, data, state, context)
  File "/home/terp/OpenERP/branch/server/5.0/bin/wizard/__init__.py", line 74, in execute_cr
    action_res = action(self, cr, uid, data, context)
  File "/data/downloads/bzr/branch/server/5.0/bin/addons/base_report_creator/wizard/wiz_set_filter_fields.py", line 138, in _set_filter_value
    'name':model_name + "/" +field_data['field_description'] +" "+ mapping_fields[form_data['operator']] + " " + str(fields_list[2]) + " ",
KeyError: False