Hi All I hope someone can point me in the right direction. I am at a bit of a loss. I am having a problem deploying an application to a Windows 2000 server, running Tomcat 5.5 and JRE1.5.0_14. I am getting a "java.lang.UnsupportedClassVersionError: Bad version number in .class file" error in the catalina log file, but I'm not making any sense of it. The application runs perfectly on my Windows XP workstation Can anybody perhaps help. If I have not provided enough or the appropriate information, please just ask and I'll post it. The full entry in the log is pasted below. Many thanks Jannetta The error in the log is : Jan 18, 2008 10:55:17 AM org.apache.catalina.startup.HostConfig deployWAR INFO: Deploying web application archive EDITS_v2.0.0.war Jan 18, 2008 10:55:19 AM org.apache.catalina.startup.HostConfig deployWAR SEVERE: Error deploying web application archive EDITS_v2.0.0.war java.lang.UnsupportedClassVersionError: Bad version number in .class file at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(Unknown Source) at java.security.SecureClassLoader.defineClass(Unknown Source) at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappCla ssLoader.java:1852) at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader .java:876) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader .java:1329) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader .java:1208) at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.jav a:1068) at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:966) at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.j ava:3956) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4230 ) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.ja va:760) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:740) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:544) at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:825) at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:515) at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1220) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.apache.commons.modeler.BaseModelMBean.invoke(BaseModelMBean.java:458 ) at com.sun.jmx.mbeanserver.DynamicMetaDataImpl.invoke(Unknown Source) at com.sun.jmx.mbeanserver.MetaDataImpl.invoke(Unknown Source) at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(Unknown Source) at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(Unknown Source) at org.apache.catalina.manager.ManagerServlet.check(ManagerServlet.java:139 4) at org.apache.catalina.manager.HTMLManagerServlet.doPost(HTMLManagerServlet .java:213) 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(Applica tionFilterChain.java:269) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilt erChain.java:188) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValv e.java:213) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValv e.java:174) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(Authenticator Base.java:525) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java :127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java :117) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve. java:108) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:1 51) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:87 4) at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.proc essConnection(Http11BaseProtocol.java:665) at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint .java:528) at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollow erWorkerThread.java:81) at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool .java:689) at java.lang.Thread.run(Unknown Source)
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