Hello. I get this exception:

11:00:03,878 ERROR [jsf] Cant instantiate class: org.ajax4jsf.application.AjaxStateManager.
java.lang.reflect.InvocationTargetException
 at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
 at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
 at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
 at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
 at com.sun.faces.util.Util.createInstance(Util.java:565)
 at com.sun.faces.config.ConfigureListener.configure(ConfigureListener.java:731)
 at com.sun.faces.config.ConfigureListener.configure(ConfigureListener.java:596)
 at com.sun.faces.config.ConfigureListener.contextInitialized(ConfigureListener.java:496)
 at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3862)
 at org.apache.catalina.core.StandardContext.start(StandardContext.java:4356)
 at org.jboss.web.tomcat.service.deployers.TomcatDeployment.performDeployInternal(TomcatDeployment.java:346)
 at org.jboss.web.tomcat.service.deployers.TomcatDeployment.performDeploy(TomcatDeployment.java:139)
 at org.jboss.web.deployers.AbstractWarDeployment.start(AbstractWarDeployment.java:431)
 at org.jboss.web.deployers.WebModule.startModule(WebModule.java:112)
 at org.jboss.web.deployers.WebModule.start(WebModule.java:90)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:597)
 at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:157)
 at org.jboss.mx.server.Invocation.dispatch(Invocation.java:96)
 at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
 at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
 at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:668)
 at org.jboss.system.microcontainer.ServiceProxy.invoke(ServiceProxy.java:206)
 at $Proxy35.start(Unknown Source)
 at org.jboss.system.microcontainer.StartStopLifecycleAction.installAction(StartStopLifecycleAction.java:42)
 at org.jboss.system.microcontainer.StartStopLifecycleAction.installAction(StartStopLifecycleAction.java:37)
 at org.jboss.dependency.plugins.action.SimpleControllerContextAction.simpleInstallAction(SimpleControllerContextAction.java:62)
 at org.jboss.dependency.plugins.action.AccessControllerContextAction.install(AccessControllerContextAction.java:71)
 at org.jboss.dependency.plugins.AbstractControllerContextActions.install(AbstractControllerContextActions.java:51)
 at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348)
 at org.jboss.system.microcontainer.ServiceControllerContext.install(ServiceControllerContext.java:271)
 at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:1392)
 at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:784)
 at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:912)
 at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:834)
 at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:672)
 at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:455)
 at org.jboss.system.ServiceController.doChange(ServiceController.java:664)
 at org.jboss.system.ServiceController.start(ServiceController.java:436)
 at org.jboss.system.deployers.ServiceDeployer.start(ServiceDeployer.java:150)
 at org.jboss.system.deployers.ServiceDeployer.deploy(ServiceDeployer.java:108)
 at org.jboss.system.deployers.ServiceDeployer.deploy(ServiceDeployer.java:46)
 at org.jboss.deployers.spi.deployer.helpers.AbstractSimpleRealDeployer.internalDeploy(AbstractSimpleRealDeployer.java:62)
 at org.jboss.deployers.spi.deployer.helpers.AbstractRealDeployer.deploy(AbstractRealDeployer.java:50)
 at org.jboss.deployers.plugins.deployers.DeployerWrapper.deploy(DeployerWrapper.java:174)
 at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:970)
 at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:991)
 at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1023)
 at org.jboss.deployers.plugins.deployers.DeployersImpl.install(DeployersImpl.java:911)
 at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348)
 at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:1392)
 at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:784)
 at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:912)
 at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:834)
 at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:672)
 at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:455)
 at org.jboss.deployers.plugins.deployers.DeployersImpl.process(DeployersImpl.java:594)
 at org.jboss.deployers.plugins.main.MainDeployerImpl.process(MainDeployerImpl.java:541)
 at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:812)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:597)
 at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:157)
 at org.jboss.mx.server.Invocation.dispatch(Invocation.java:96)
 at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
 at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
 at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:668)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:597)
 at org.jboss.jmx.connector.invoker.InvokerAdaptorService.invoke(InvokerAdaptorService.java:270)
 at sun.reflect.GeneratedMethodAccessor158.invoke(Unknown Source)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:597)
 at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:157)
 at org.jboss.mx.server.Invocation.dispatch(Invocation.java:96)
 at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:138)
 at org.jboss.mx.server.Invocation.invoke(Invocation.java:90)
 at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:140)
 at org.jboss.jmx.connector.invoker.SerializableInterceptor.invoke(SerializableInterceptor.java:74)
 at org.jboss.mx.server.Invocation.invoke(Invocation.java:90)
 at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
 at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:668)
 at org.jboss.invocation.jrmp.server.JRMPProxyFactory.invoke(JRMPProxyFactory.java:179)
 at sun.reflect.GeneratedMethodAccessor157.invoke(Unknown Source)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:597)
 at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:157)
 at org.jboss.mx.server.Invocation.dispatch(Invocation.java:96)
 at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
 at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
 at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:668)
 at org.jboss.invocation.jrmp.server.JRMPInvoker$MBeanServerAction.invoke(JRMPInvoker.java:815)
 at org.jboss.invocation.jrmp.server.JRMPInvoker.invoke(JRMPInvoker.java:416)
 at sun.reflect.GeneratedMethodAccessor156.invoke(Unknown Source)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:597)
 at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:305)
 at sun.rmi.transport.Transport$1.run(Transport.java:159)
 at java.security.AccessController.doPrivileged(Native Method)
 at sun.rmi.transport.Transport.serviceCall(Transport.java:155)
 at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:535)
 at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:790)
 at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:649)
 at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
 at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
 at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.LinkageError: loader constraint violation: when resolving method "org.apache.commons.collections.map.LazyMap.decorate(Ljava/util/Map;Lorg/apache/commons/collections/Transformer;)Ljava/util/Map;" the class loader (instance of org/jboss/classloader/spi/base/BaseClassLoader) of the current class, org/ajax4jsf/application/ComponentsLoaderImpl, and the class loader (instance of org/jboss/classloader/spi/base/BaseClassLoader) for resolved class, org/apache/commons/collections/map/LazyMap, have different Class objects for the type org/apache/commons/collections/Transformer used in the signature
 at org.ajax4jsf.application.ComponentsLoaderImpl.<init>(ComponentsLoaderImpl.java:27)
 at org.ajax4jsf.application.AjaxStateManager.<init>(AjaxStateManager.java:142)
 ... 111 more