Something

usr/lib/gdesklets/utils/Element.py                                                  
   87             setter = self.__property_handlers[key][0]                          
   88             datatype = self.__property_handlers[key][2]                        
   89                                                                                
   90         except KeyError:                                                       
   91             raise UserError(_("No such property: %s") % key,                   
>  92                             _("The element <b>%s</b> does not have the "       
   93                               "<b>%s</b> property.") % (self.__name, key))     
   94                                                                                
   95         if (not setter):                                                       
   96             raise UserError(_("Permission Error"),                             
   97                            _("The property <b>%s</b> of element <b>%s</b> "    
   98                              "is not writable.") % (key, self.__name))