Web Service Toolkit:FAQ
Error : identifier idents no member "InterfaceGUID"
This error occurs with FPC 2.0.x or old version of FPC 2.1.x. This property has been introduced in FPC 2.2 beta. For FPC 2.1.x just update to a new snapshot. For FPC 2.0.4 download the new "fcl-passrc"( pastree.pp, paswrite.pp, pparser.pp and pscanner.pp ) and place the files into the "ws_helper" folder.