argument type mismatch in Events.postEvent

02-abr-2012 16:00:30 org.zkoss.zk.ui.impl.UiEngineImpl handleError:1348
GRAVE: >>java.lang.IllegalArgumentException: argument type mismatch
>>	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
>>	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
>>	at java.lang.reflect.Method.invoke(Unknown Source)
>>	at org.zkoss.zk.ui.event.GenericEventListener.onEvent(GenericEventListener.java:96)
>>	at org.zkoss.zk.ui.AbstractComponent.onEvent(AbstractComponent.java:2699)
>>	at org.zkoss.zk.ui.AbstractComponent.service(AbstractComponent.java:2670)
>>	at org.zkoss.zk.ui.AbstractComponent.service(AbstractComponent.java:2611)
>>	at org.zkoss.zk.ui.impl.EventProcessor.process(EventProcessor.java:136)
>>	at org.zkoss.zk.ui.impl.EventProcessingThreadImpl.process0(EventProcessingThreadImpl.java:534)
>>	at org.zkoss.zk.ui.impl.EventProcessingThreadImpl.run(EventProcessingThreadImpl.java:461)