<zk>
	<window id="win" title="Hello World!!" border="normal" width="500px" 
		apply="zkforge.zkcache.BugComposer">
		<textbox id="tb"/>
		<hlayout>
		<button label="set"/>
		</hlayout>
	</window>
</zk>

package zkforge.zkcache;

import org.zkoss.zk.ui.event.Event;
import org.zkoss.zk.ui.event.EventQueues;
import org.zkoss.zk.ui.select.SelectorComposer;
import org.zkoss.zk.ui.select.annotation.Listen;
import org.zkoss.zk.ui.select.annotation.Wire;
import org.zkoss.zkmax.ui.select.annotation.Subscribe;
import org.zkoss.zul.Textbox;
import org.zkoss.zul.Window;

public class BugComposer extends SelectorComposer {
	private static final long serialVersionUID = 1L;

	@Wire
	Window win;

	@Wire
	Textbox tb;

	@Listen("onClick = button[label='set']")
	public void set() {
		String value = tb.getValue();
		System.out.println(">>>set " + value);
		EventQueues.lookup("myqueue", "desktop", true).publish(new Event("onSet"));
	}

	@Subscribe(value = "myqueue", scope = "desktop")
	public void subscribe() {
		System.out.println(">>>get queue event " + this);
	}
}

java.io.NotSerializableException: org.zkoss.zk.ui.select.Selectors$ComposerEventListener
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1164)
	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1518)
	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1483)
	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)
	at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:330)
	at java.util.LinkedList.writeObject(LinkedList.java:943)
	at sun.reflect.GeneratedMethodAccessor32.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:945)
	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1469)
	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)
	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1518)
	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1483)
	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)
	at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:330)
	at java.util.HashMap.writeObject(HashMap.java:1001)
	at sun.reflect.GeneratedMethodAccessor31.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:945)
	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1469)
	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)
	at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:330)
	at org.zkoss.io.Serializables.smartWrite(Serializables.java:61)
	at org.zkoss.zk.ui.impl.DesktopImpl.writeObject(DesktopImpl.java:1027)
	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 java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:945)
	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1469)
	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)
	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1518)
	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1483)
	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)
	at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:330)
	at java.util.HashMap.writeObject(HashMap.java:1001)
	at sun.reflect.GeneratedMethodAccessor31.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:945)
	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1469)
	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)
	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1518)
	at java.io.ObjectOutputStream.defaultWriteObject(ObjectOutputStream.java:422)
	at org.zkoss.util.CacheMap.writeObject(CacheMap.java:632)
	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 java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:945)
	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1469)
	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)
	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1518)
	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1483)
	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)
	at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:330)
	at org.zkoss.zk.ui.http.SimpleSession.writeThis(SimpleSession.java:435)
	at org.zkoss.zk.ui.http.SerializableSession.writeObject(SerializableSession.java:71)
	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 java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:945)
	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1469)
	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)
	at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:330)
	at org.apache.catalina.ha.session.DeltaRequest$AttributeInfo.writeExternal(DeltaRequest.java:389)
	at org.apache.catalina.ha.session.DeltaRequest.writeExternal(DeltaRequest.java:287)
	at org.apache.catalina.ha.session.DeltaRequest.serialize(DeltaRequest.java:302)
	at org.apache.catalina.ha.session.DeltaManager.serializeDeltaRequest(DeltaManager.java:742)
	at org.apache.catalina.ha.session.DeltaManager.requestCompleted(DeltaManager.java:1253)
	at org.apache.catalina.ha.session.DeltaManager.requestCompleted(DeltaManager.java:1218)
	at org.apache.catalina.ha.tcp.ReplicationValve.send(ReplicationValve.java:550)
	at org.apache.catalina.ha.tcp.ReplicationValve.sendMessage(ReplicationValve.java:537)
	at org.apache.catalina.ha.tcp.ReplicationValve.sendSessionReplicationMessage(ReplicationValve.java:519)
	at org.apache.catalina.ha.tcp.ReplicationValve.sendReplicationMessage(ReplicationValve.java:430)
	at org.apache.catalina.ha.tcp.ReplicationValve.invoke(ReplicationValve.java:363)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
	at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:190)
	at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:291)
	at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:776)
	at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:705)
	at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:898)
	at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:690)
	at java.lang.Thread.run(Thread.java:662)