Arquivo Discussoes de Programacao e Tecnologia 
Boa tarde galera,
Estou tendo essa exception quando tendo conectar nos webservices da receita para nota fiscal eletronica.
Eu acredito ser problema problema de lib mas não encrontrei saida ainda 
tentei várias xerces-Impl.x.x.jar, mas … sem sucesso
org.apache.xerces.parsers.XIncludeAwareParserConfiguration cannot be cast to org.apache.xerces.xni.parser.XMLParserConfiguration
Alguma idéia?
o Erro completo é esse galera:
java.lang.ClassCastException: org.apache.xerces.parsers.XIncludeAwareParserConfiguration cannot be cast to org.apache.xerces.xni.parser.XMLParserConfiguration
at org.apache.xerces.parsers.SAXParser.<init>(Unknown Source)
at org.apache.xerces.parsers.SAXParser.<init>(Unknown Source)
at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.<init>(Unknown Source)
at org.apache.xerces.jaxp.SAXParserImpl.<init>(Unknown Source)
at org.apache.xerces.jaxp.SAXParserFactoryImpl.newSAXParser(Unknown Source)
at com.sun.org.apache.xml.internal.resolver.readers.SAXCatalogReader.readCatalog(SAXCatalogReader.java:241)
at com.sun.org.apache.xml.internal.resolver.Catalog.parseCatalog(Catalog.java:687)
at com.sun.xml.ws.util.xml.XmlUtil.createDefaultCatalogResolver(XmlUtil.java:299)
at com.sun.xml.ws.client.WSServiceDelegate.parseWSDL(WSServiceDelegate.java:267)
at com.sun.xml.ws.client.WSServiceDelegate.<init>(WSServiceDelegate.java:230)
at com.sun.xml.ws.client.WSServiceDelegate.<init>(WSServiceDelegate.java:178)
at com.sun.xml.ws.spi.ProviderImpl.createServiceDelegate(ProviderImpl.java:106)
at javax.xml.ws.Service.<init>(Service.java:77)
at br.com.flysolution.nfe2.inutilizacao.NfeInutilizacao2.<init>(NfeInutilizacao2.java:52)
at br.com.flysolution.nfe2.teste.TestarInutilizacaoNfe.inutilizarNfe(TestarInutilizacaoNfe.java:145)
at flysolution.flyflex.ear.functions.NFe2Manager.inutilizarNFe(NFe2Manager.java:2637)
at flysolution.flyflex.web.action.infra.nfe2inutnumero.Interceptor.validateInsertSave(Interceptor.java:45)
at flysolution.framework.action.basic.BasicSaveAction.execute(BasicSaveAction.java:71)
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:261)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:581)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Thread.java:744)
Já tá me dando azia