Error: IsComplete is not found

soap:ServerSystem.Web.Services.Protocols.SoapException: Server was unable to process request. ---> System.Exception: PitsUnkError
   at Promt.Pits.Translator.Services.Translator2.TranslateHTMLFile(Int32 DirId, String TplId, Byte[] data, TemplateDataSet Context, String URLBase, String HrefPrefix)
   --- End of inner exception stack trace ---