[xwiki-users] Deployment-Error: configuring application listener of class org.xwiki.container.servlet.SetThreadNameServletRequestListener

Hello everyone, I am trying to deploy xwiki-enterprise-web-6.1.war on a tomcat7 installation. Upon starting the server I get the attached error message. Setup: # java -version java version "1.8.0_11" Java(TM) SE Runtime Environment (build 1.8.0_11-b12) Java HotSpot(TM) 64-Bit Server VM (build 25.11-b03, mixed mode) tomcat: Version: 12.0.18_build1200140606.15 os_Debian 7.0 XWIKI: xwiki-enterprise-web-6.1.war Any ideas on what is going on? Thanks a lot, Chris Aug 14, 2014 7:23:53 PM org.apache.catalina.core.StandardContext listenerStart SEVERE: Error configuring application listener of class org.xwiki.container.servlet.XWikiServletContextListener java.lang.UnsupportedClassVersionError: org/xwiki/container/servlet/XWikiServletContextListener : Unsupported major.minor version 51.0 (unable to load class org.xwiki.container.servlet.XWikiServletContextListener) at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2905) at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:1170) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1678) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1556) at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:532) at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:514) at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:133) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4726) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5284) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:899) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:875) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:618) at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:963) at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1600) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334) at java.util.concurrent.FutureTask.run(FutureTask.java:166) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1146) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:701) Aug 14, 2014 7:23:53 PM org.apache.catalina.core.StandardContext listenerStart SEVERE: Error configuring application listener of class org.xwiki.container.servlet.SetThreadNameServletRequestListener java.lang.UnsupportedClassVersionError: org/xwiki/container/servlet/SetThreadNameServletRequestListener : Unsupported major.minor version 51.0 (unable to load class org.xwiki.container.servlet.SetThreadNameServletRequestListener) at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2905) at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:1170) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1678) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1556) at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:532) at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:514) at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:133) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4726) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5284) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:899) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:875) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:618) at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:963) at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1600) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334) at java.util.concurrent.FutureTask.run(FutureTask.java:166) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1146) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:701) Aug 14, 2014 7:23:53 PM org.apache.catalina.core.StandardContext listenerStart SEVERE: Skipped installing application listeners due to previous error(s)