Hi, what could be the problem with the following exception. we are trying to work with axis web service on jboss 4.0.1. Same application is working fine with corresponding tomcat version wihtout any problem. but when we deploy it the application on jboss we are getting the following exception. | IdleRemover notifying pools, interval: 150000 162481719 ERROR [http-0.0.0.0-8080-Processor23] org.jboss.web.localhost.Engine - StandardWrapperValve[jsp]: Servlet.service() for servlet jsp threw exception java.lang.VerifyError: (class: org/apache/jsp/logon_jsp, method: _jspService signature: (Ljavax/servlet/http/HttpServletRequest;Ljavax/servlet/http/HttpServletResponse;)V) Incompatible object argument for function call at java.lang.Class.getDeclaredConstructors0(Native Method) at java.lang.Class.privateGetDeclaredConstructors(Class.java:1618) at java.lang.Class.getConstructor0(Class.java:1930) at java.lang.Class.newInstance0(Class.java:278) at java.lang.Class.newInstance(Class.java:261) at org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:137) at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:307) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236) at javax.servlet.http.HttpServlet.service(HttpServlet.java:810) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157) at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:75) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520) at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104) at org.jboss.web.tomcat.security.CustomPrincipalValve.invoke(CustomPrincipalValve.java:66) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102) at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:150) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102) at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:54) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929) at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705) at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577) at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683) at java.lang.Thread.run(Thread.java:534) 162542313 DEBUG [IdleRemover] org.jboss.resource.connectionmanager.IdleRemover - run: IdleRemover notifying pools, interval: 150000 any info about this exception will be of great use for me. Thanks Harinath View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3968827#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...