MyEclipse 生成Web Service Client代码问题

MyEclipse 在生成Web Service Client代码的时候，到验证WSDL的时候报错：org.xml.sax.SAXParseException: undefined element declaration 's:schema'
at com.sun.xml.xsom.impl.parser.ParserContext$1.reportError(ParserContext.java:140)
at com.sun.xml.xsom.impl.parser.NGCCRuntimeEx.reportError(NGCCRuntimeEx.java:134)
at com.sun.xml.xsom.impl.parser.DelayedRef.resolve(DelayedRef.java:89)
at com.sun.xml.xsom.impl.parser.DelayedRef.run(DelayedRef.java:64)
at com.sun.xml.xsom.impl.parser.ParserContext.getResult(ParserContext.java:95)
at com.sun.xml.xsom.parser.XSOMParser.getResult(XSOMParser.java:190)
at com.sun.tools.xjc.ModelLoader.createXSOM(ModelLoader.java:519)
at com.sun.tools.xjc.api.impl.s2j.SchemaCompilerImpl.bind(SchemaCompilerImpl.java:232)
at com.sun.tools.xjc.api.impl.s2j.SchemaCompilerImpl.bind(SchemaCompilerImpl.java:85)
at org.codehaus.xfire.gen.jaxb.JAXBSchemaSupport.initialize(JAXBSchemaSupport.java:105)
at org.codehaus.xfire.gen.Wsdl11Generator.generate(Wsdl11Generator.java:154)
at com.genuitec.eclipse.ws.xfire.generator.WSGenJob.run(WSGenJob.java:246)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)
无法生成代码，望高手解决。