Hi, I have developed an web application with NetBeans 5.5 and tested "OK" on standalone Windows XP PC. But once deployed (by copying war files into the deploy dir in Windows Server 2003) successfully into the running JBOSS. Its show up errors while browsing in the IE from workstation and the server itself. The errors are follows: anonymous wrote : 22:10:17,984 ERROR [[Faces Servlet]] Servlet.service() for servlet Faces Servlet | threw exception | java.lang.UnsupportedClassVersionError: Bad version number in .class file | at java.lang.ClassLoader.defineClass1(Native Method) | at java.lang.ClassLoader.defineClass(ClassLoader.java:620) | at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:12 | 4) | at org.apache.catalina.loader.WebappClassLoader.findClassInternal(Webapp | ClassLoader.java:1815) | at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoa | der.java:869) | at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoa | der.java:1322) | at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoa | der.java:1201) | at java.beans.Beans.instantiate(Beans.java:187) | at java.beans.Beans.instantiate(Beans.java:48) | at com.sun.faces.config.ManagedBeanFactory.newInstance(ManagedBeanFactor | y.java:223) | at com.sun.faces.application.ApplicationAssociate.createAndMaybeStoreMan | agedBeans(ApplicationAssociate.java:306) | at com.sun.faces.el.VariableResolverImpl.resolveVariable(VariableResolve | rImpl.java:97) | at com.sun.faces.el.impl.NamedValue.evaluate(NamedValue.java:145) | at com.sun.faces.el.impl.ExpressionEvaluatorImpl.evaluate(ExpressionEval | uatorImpl.java:263) | at com.sun.faces.el.ValueBindingImpl.getValue(ValueBindingImpl.java:160) | | at com.sun.faces.el.ValueBindingImpl.getValue(ValueBindingImpl.java:143) | | at com.sun.rave.web.ui.appbase.faces.ViewHandlerImpl.pageBean(ViewHandle | rImpl.java:666) | at com.sun.rave.web.ui.appbase.faces.ViewHandlerImpl.pageBean(ViewHandle | rImpl.java:641) | at com.sun.rave.web.ui.appbase.faces.ViewHandlerImpl.renderView(ViewHand | lerImpl.java:249) | at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePha | se.java:107) | at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:245) | at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:137) | at javax.faces.webapp.FacesServlet.service(FacesServlet.java:214) | at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl | icationFilterChain.java:252) | at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF | ilterChain.java:173) | at com.sun.rave.web.ui.util.UploadFilter.doFilter(UploadFilter.java:198) | | at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl | icationFilterChain.java:202) | at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF | ilterChain.java:173) | at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFi | lter.java:96) | at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl | icationFilterChain.java:202) | at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF | ilterChain.java:173) | at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperV | alve.java:213) | at org.apache.catalina.core.StandardContextValve.invoke(StandardContextV | alve.java:178) | at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(Securit | yAssociationValve.java:175) | at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValv | e.java:74) | at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.j | ava:126) | at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.j | ava:105) | at org.jboss.web.tomcat.tc5.jca.CachedConnectionValve.invoke(CachedConne | ctionValve.java:156) | at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineVal | ve.java:107) | at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.jav | a:148) | at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java | :869) | at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.p | rocessConnection(Http11BaseProtocol.java:664) | at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpo | int.java:527) | at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWor | kerThread.java:112) | at java.lang.Thread.run(Thread.java:595) | 22:11:43,296 ERROR [[Faces Servlet]] Servlet.service() for servlet Faces Servlet | threw exception | java.lang.UnsupportedClassVersionError: Bad version number in .class file | at java.lang.ClassLoader.defineClass1(Native Method) | at java.lang.ClassLoader.defineClass(ClassLoader.java:620) | at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:12 | 4) | at org.apache.catalina.loader.WebappClassLoader.findClassInternal(Webapp | ClassLoader.java:1815) | at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoa | der.java:869) | at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoa | der.java:1322) | at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoa | der.java:1201) | at java.beans.Beans.instantiate(Beans.java:187) | at java.beans.Beans.instantiate(Beans.java:48) | at com.sun.faces.config.ManagedBeanFactory.newInstance(ManagedBeanFactor | y.java:223) | at com.sun.faces.application.ApplicationAssociate.createAndMaybeStoreMan | agedBeans(ApplicationAssociate.java:306) | at com.sun.faces.el.VariableResolverImpl.resolveVariable(VariableResolve | rImpl.java:97) | at com.sun.faces.el.impl.NamedValue.evaluate(NamedValue.java:145) | at com.sun.faces.el.impl.ExpressionEvaluatorImpl.evaluate(ExpressionEval | uatorImpl.java:263) | at com.sun.faces.el.ValueBindingImpl.getValue(ValueBindingImpl.java:160) | | at com.sun.faces.el.ValueBindingImpl.getValue(ValueBindingImpl.java:143) | | at com.sun.rave.web.ui.appbase.faces.ViewHandlerImpl.pageBean(ViewHandle | rImpl.java:666) | at com.sun.rave.web.ui.appbase.faces.ViewHandlerImpl.pageBean(ViewHandle | rImpl.java:641) | at com.sun.rave.web.ui.appbase.faces.ViewHandlerImpl.renderView(ViewHand | lerImpl.java:249) | at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePha | se.java:107) | at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:245) | at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:137) | at javax.faces.webapp.FacesServlet.service(FacesServlet.java:214) | at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl | icationFilterChain.java:252) | at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF | ilterChain.java:173) | at com.sun.rave.web.ui.util.UploadFilter.doFilter(UploadFilter.java:198) | | at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl | icationFilterChain.java:202) | at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF | ilterChain.java:173) | at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFi | lter.java:96) | at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl | icationFilterChain.java:202) | at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF | ilterChain.java:173) | at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperV | alve.java:213) | at org.apache.catalina.core.StandardContextValve.invoke(StandardContextV | alve.java:178) | at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(Securit | yAssociationValve.java:175) | at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValv | e.java:74) | at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.j | ava:126) | at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.j | ava:105) | at org.jboss.web.tomcat.tc5.jca.CachedConnectionValve.invoke(CachedConne | ctionValve.java:156) | at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineVal | ve.java:107) | at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.jav | a:148) | at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java | :869) | at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.p | rocessConnection(Http11BaseProtocol.java:664) | at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpo | int.java:527) | at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWor | kerThread.java:112) | at java.lang.Thread.run(Thread.java:595) | 22:13:11,375 ERROR [[Faces Servlet]] Servlet.service() for servlet Faces Servlet | threw exception | java.lang.UnsupportedClassVersionError: Bad version number in .class file | at java.lang.ClassLoader.defineClass1(Native Method) | at java.lang.ClassLoader.defineClass(ClassLoader.java:620) | at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:12 | 4) | at org.apache.catalina.loader.WebappClassLoader.findClassInternal(Webapp | ClassLoader.java:1815) | at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoa | der.java:869) | at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoa | der.java:1322) | at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoa | der.java:1201) | at java.beans.Beans.instantiate(Beans.java:187) | at java.beans.Beans.instantiate(Beans.java:48) | at com.sun.faces.config.ManagedBeanFactory.newInstance(ManagedBeanFactor | y.java:223) | at com.sun.faces.application.ApplicationAssociate.createAndMaybeStoreMan | agedBeans(ApplicationAssociate.java:306) | at com.sun.faces.el.VariableResolverImpl.resolveVariable(VariableResolve | rImpl.java:97) | at com.sun.faces.el.impl.NamedValue.evaluate(NamedValue.java:145) | at com.sun.faces.el.impl.ExpressionEvaluatorImpl.evaluate(ExpressionEval | uatorImpl.java:263) | at com.sun.faces.el.ValueBindingImpl.getValue(ValueBindingImpl.java:160) | | at com.sun.faces.el.ValueBindingImpl.getValue(ValueBindingImpl.java:143) | | at com.sun.rave.web.ui.appbase.faces.ViewHandlerImpl.pageBean(ViewHandle | rImpl.java:666) | at com.sun.rave.web.ui.appbase.faces.ViewHandlerImpl.pageBean(ViewHandle | rImpl.java:641) | at com.sun.rave.web.ui.appbase.faces.ViewHandlerImpl.renderView(ViewHand | lerImpl.java:249) | at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePha | se.java:107) | at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:245) | at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:137) | at javax.faces.webapp.FacesServlet.service(FacesServlet.java:214) | at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl | icationFilterChain.java:252) | at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF | ilterChain.java:173) | at com.sun.rave.web.ui.util.UploadFilter.doFilter(UploadFilter.java:198) | | at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl | icationFilterChain.java:202) | at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF | ilterChain.java:173) | at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFi | lter.java:96) | at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl | icationFilterChain.java:202) | at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF | ilterChain.java:173) | at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperV | alve.java:213) | at org.apache.catalina.core.StandardContextValve.invoke(StandardContextV | alve.java:178) | at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(Securit | yAssociationValve.java:175) | at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValv | e.java:74) | at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.j | ava:126) | at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.j | ava:105) | at org.jboss.web.tomcat.tc5.jca.CachedConnectionValve.invoke(CachedConne | ctionValve.java:156) | at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineVal | ve.java:107) | at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.jav | a:148) | at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java | :869) | at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.p | rocessConnection(Http11BaseProtocol.java:664) | at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpo | int.java:527) | at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWor | kerThread.java:112) | at java.lang.Thread.run(Thread.java:595) Can anyone help me ..! Thanks Rgds David View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4032801#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...