Rex suggested the following workaroundAs a workaround you’ll have to use ArcGIS Server SOAP directly. Here’s a link to the SOAP content for this operation: <a href="http://resources.esri.com/help/9.3/arcgisserver/apis/soap/SOAP_Geocode_ReverseGeocode.htm" target="_blank">http://resources.esri.com/help/9.3/arcgisserver/apis/soap/SOAP_Geocode_ReverseGeocode.htm</a>