Problems deploying Grails 2.1.1 application to JBoss 4.2.3 GA

I recently upgraded my app from Grails 1.2.2 to Grails 2.1.1.

Running my code from within the GGTS works very well.

However I'm having problems deploying it to JBoss 4.2.3 GA.

I get:
java.lang.ClassNotFoundException: org.codehaus.groovy.grails.plugins.log4j.web.util. Log4jConfigListener.

Note that this is not the class org.codehaus.groovy.grails.web.util.Log4jConfigLis tener.

I followed all the instructions I could find, including installing the new templates and updating web.xml.

2012-12-06 10:23:38,096 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[localhost].[/ems]] Error configuring application listener of class org.codehaus.groovy.grails.plugins.log4j.web.util. Log4jConfigListener
java.lang.ClassNotFoundException: org.codehaus.groovy.grails.plugins.log4j.web.util. Log4jConfigListener
at org.apache.catalina.loader.WebappClassLoader.loadC lass(WebappClassLoader.java:1358)
at org.apache.catalina.loader.WebappClassLoader.loadC lass(WebappClassLoader.java:1204)
at org.apache.catalina.core.StandardContext.listenerS tart(StandardContext.java:3799)
at org.apache.catalina.core.StandardContext.start(Sta ndardContext.java:4361)
at org.apache.catalina.core.ContainerBase.addChildInt ernal(ContainerBase.java:790)
at org.apache.catalina.core.ContainerBase.addChild(Co ntainerBase.java:770)
at org.apache.catalina.core.StandardHost.addChild(Sta ndardHost.java:553)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Nativ e Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Native MethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(De legatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.tomcat.util.modeler.BaseModelMBean.invo ke(BaseModelMBean.java:296)
at org.jboss.mx.server.RawDynamicInvoker.invoke(RawDy namicInvoker.java:164)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanSe rverImpl.java:659)
at org.apache.catalina.core.StandardContext.init(Stan dardContext.java:5312)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Nativ e Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Native MethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(De legatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.tomcat.util.modeler.BaseModelMBean.invo ke(BaseModelMBean.java:296)
at org.jboss.mx.server.RawDynamicInvoker.invoke(RawDy namicInvoker.java:164)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanSe rverImpl.java:659)
at org.jboss.web.tomcat.service.TomcatDeployer.perfor mDeployInternal(TomcatDeployer.java:301)
at org.jboss.web.tomcat.service.TomcatDeployer.perfor mDeploy(TomcatDeployer.java:104)
at org.jboss.web.AbstractWebDeployer.start(AbstractWe bDeployer.java:375)
at org.jboss.web.WebModule.startModule(WebModule.java :83)
at org.jboss.web.WebModule.startService(WebModule.jav a:61)
at org.jboss.system.ServiceMBeanSupport.jbossInternal Start(ServiceMBeanSupport.java:289)
at org.jboss.system.ServiceMBeanSupport.jbossInternal Lifecycle(ServiceMBeanSupport.java:245)
at sun.reflect.GeneratedMethodAccessor6.invoke(Unknow n Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(De legatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.jboss.mx.interceptor.ReflectedDispatcher.invok e(ReflectedDispatcher.java:155)


I also tried to disable the Log4J plugin as explained in the following link:
http://stackoverflow.com/questions/1...ugin-in-grails

Then I got even a stranger exception:

2012-12-06 10:52:50,963 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[localhost].[/ems]] Exception sending context initialized event to listener instance of class org.codehaus.groovy.grails.web.context.GrailsConte xtLoaderListener
java.lang.NoClassDefFoundError: groovy/lang/ExpandoMetaClass
at org.codehaus.groovy.grails.web.context.GrailsConte xtLoader.initWebApplicationContext(GrailsContextLo ader.java:52)
at org.springframework.web.context.ContextLoaderListe ner.contextInitialized(ContextLoaderListener.java: 47)
at org.apache.catalina.core.StandardContext.listenerS tart(StandardContext.java:3856)
at org.apache.catalina.core.StandardContext.start(Sta ndardContext.java:4361)
at org.apache.catalina.core.ContainerBase.addChildInt ernal(ContainerBase.java:790)
at org.apache.catalina.core.ContainerBase.addChild(Co ntainerBase.java:770)
at org.apache.catalina.core.StandardHost.addChild(Sta ndardHost.java:553)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Nativ e Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Native MethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(De legatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.tomcat.util.modeler.BaseModelMBean.invo ke(BaseModelMBean.java:296)
at org.jboss.mx.server.RawDynamicInvoker.invoke(RawDy namicInvoker.java:164)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanSe rverImpl.java:659)
...
at org.jboss.Main.boot(Main.java:200)
at org.jboss.Main$1.run(Main.java:508)
at java.lang.Thread.run(Thread.java:662)
Caused by: java.lang.ClassNotFoundException: groovy.lang.ExpandoMetaClass
at org.apache.catalina.loader.WebappClassLoader.loadC lass(WebappClassLoader.java:1358)
at org.apache.catalina.loader.WebappClassLoader.loadC lass(WebappClassLoader.java:1204)
... 134 more

Now, it seems that something is wrong with groovy.

Does anyone have any idea what could be the problem?
Am I missing a plugin (grails-plugin-log4j-2.1.1.jar)?
Do I need to upgrade the groovy libraries somehow?

Thanks,
Shai