Struts下建项目，启动服务器后出现问题！高手来帮忙

启动服务器，debug显示如下信息
请高手帮忙，看是哪的毛病
tomcat运行其他jsp程序正常
tomcat6Server [Remote Java Application]
org.apache.catalina.startup.Bootstrap at localhost:4283
Thread [main] (Suspended (exception IllegalArgumentException))
IntrospectionUtils.convert(String, Class) line: 976
CallMethodRule.end() line: 523
CallMethodRule(Rule).end(String, String) line: 229
Digester.endElement(String, String, String) line: 1058
SAXParserImpl$JAXPSAXParser(AbstractSAXParser).endElement(QName, Augmentations) line: 601
XMLDocumentScannerImpl(XMLDocumentFragmentScannerImpl).scanEndElement() line: 1772
XMLDocumentScannerImpl$ContentDriver(XMLDocumentFragmentScannerImpl$FragmentContentDriver).next() line: 2923
XMLDocumentScannerImpl.next() line: 645
XMLDocumentScannerImpl(XMLDocumentFragmentScannerImpl).scanDocument(boolean) line: 508
XIncludeAwareParserConfiguration(XML11Configuration).parse(boolean) line: 807
XIncludeAwareParserConfiguration(XML11Configuration).parse(XMLInputSource) line: 737
SAXParserImpl$JAXPSAXParser(XMLParser).parse(XMLInputSource) line: 107
SAXParserImpl$JAXPSAXParser(AbstractSAXParser).parse(InputSource) line: 1205
SAXParserImpl$JAXPSAXParser.parse(InputSource) line: 522
Digester.parse(InputSource) line: 1562
ContextConfig.applicationWebConfig() line: 369
ContextConfig.start() line: 1062
ContextConfig.lifecycleEvent(LifecycleEvent) line: 261
LifecycleSupport.fireLifecycleEvent(String, Object) line: 120
StandardContext.start() line: 4238
StandardHost(ContainerBase).addChildInternal(Container) line: 761
StandardHost(ContainerBase).addChild(Container) line: 741
StandardHost.addChild(Container) line: 525
HostConfig.deployDirectory(String, File, String) line: 920
HostConfig.deployDirectories(File, String[]) line: 883
HostConfig.deployApps() line: 492
HostConfig.start() line: 1138
HostConfig.lifecycleEvent(LifecycleEvent) line: 311
LifecycleSupport.fireLifecycleEvent(String, Object) line: 120
StandardHost(ContainerBase).start() line: 1023
StandardHost.start() line: 719
StandardEngine(ContainerBase).start() line: 1015
StandardEngine.start() line: 443
StandardService.start() line: 448
StandardServer.start() line: 710
Catalina.start() line: 552
NativeMethodAccessorImpl.invoke0(Method, Object, Object[]) line: not available [native method]
NativeMethodAccessorImpl.invoke(Object, Object[]) line: 39
DelegatingMethodAccessorImpl.invoke(Object, Object[]) line: 25
Method.invoke(Object, Object...) line: 597
Bootstrap.start() line: 288
Bootstrap.main(String[]) line: 413
C:\Program Files\Java\jdk1.6.0\bin\javaw.exe (Apr 22, 2007 12:40:04 AM)