Problem deploying portlet in liferay installed as webapp in clean tomcat

• Type: Bug
• Status: Closed
• Resolution: Won't Fix
• Affects Version/s: 6.1.1 CE GA2
• Fix Version/s: 6.1.1 CE GA2
• Component/s: Portal Services, Portal Services > Component Management, Portal Services > Component Management > Hot Deployment
• Labels: None
• Environment: Ubuntu 13.04; Tomcat 7.0.39

The stacktrace is

Jul 23, 2013 9:21:34 PM org.apache.catalina.core.StandardContext listenerStart
SEVERE: Error configuring application listener of class com.liferay.portal.kernel.servlet.PluginContextListener
java.lang.ClassNotFoundException: com.liferay.portal.kernel.servlet.PluginContextListener
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1713)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1558)
at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:527)
at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:509)
at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:137)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4823)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5381)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:633)
at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1114)
at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1673)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:44
1)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
Jul 23, 2013 9:21:34 PM org.apache.catalina.core.StandardContext listenerStart
SEVERE: Error configuring application listener of class com.liferay.portal.kernel.servlet.SerializableSessionAttributeListener
java.lang.ClassNotFoundException: com.liferay.portal.kernel.servlet.SerializableSessionAttributeListener
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1713)