I am using t:dataTable in a  portlet ( Weblogic Portal 9.2 Beta,  Tomhawk 1.1.2 snapshot ) 
 
I am getting the following exception when I tried to sort  ( it works fine outside of the portlet)
 
Am I missing something?
 
javax.faces.el.PropertyNotFoundException: Error setting property 'sort' in bean of type null
	at com.sun.faces.el.PropertyResolverImpl.setValue(PropertyResolverImpl.java:153)
	at com.sun.faces.el.impl.ArraySuffix.setValue(ArraySuffix.java:192)
	at com.sun.faces.el.impl.ComplexValue.setValue(ComplexValue.java:171)
	at com.sun.faces.el.ValueBindingImpl.setValue(ValueBindingImpl.java:234)
	at org.apache.myfaces.component.html.ext.HtmlDataTable.setSortColumn(HtmlDataTable.java:577)
	at org.apache.myfaces.custom.sortheader.HtmlCommandSortHeader.broadcast(HtmlCommandSortHeader.java:70)
	at javax.faces.component.UIData.broadcast(UIData.java:657)
	at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:267)
	at javax.faces.component.UIViewRoot.processDecodes(UIViewRoot.java:307)
	at com.bea.portlet.adapter.faces.lifecycle.LifecycleImpl$ApplyRequestValuesPhase.execute(LifecycleImpl.java:537)
	at com.bea.portlet.adapter.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:275)
	at com.bea.portlet.adapter.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:136)
	at com.bea.portlet.adapter.faces.FacesContentStubImpl.processAction(FacesContentStubImpl.java:198)
	at com.bea.netuix.servlets.controls.content.FacesContent.handlePostbackData(FacesContent.java:195)
	at com.bea.netuix.nf.ControlLifecycle$2.visit(ControlLifecycle.java:179)
	at com.bea.netuix.nf.ControlTreeWalker.walkRecursive(ControlTreeWalker.java:351)
	at com.bea.netuix.nf.ControlTreeWalker.walkRecursive(ControlTreeWalker.java:361)
	at com.bea.netuix.nf.ControlTreeWalker.walkRecursive(ControlTreeWalker.java:361)
	at com.bea.netuix.nf.ControlTreeWalker.walkRecursive(ControlTreeWalker.java:361)
	at com.bea.netuix.nf.ControlTreeWalker.walkRecursive(ControlTreeWalker.java:361)
	at com.bea.netuix.nf.ControlTreeWalker.walkRecursive(ControlTreeWalker.java:361)
	at com.bea.netuix.nf.ControlTreeWalker.walkRecursive(ControlTreeWalker.java:361)
	at com.bea.netuix.nf.ControlTreeWalker.walkRecursive(ControlTreeWalker.java:361)
	at com.bea.netuix.nf.ControlTreeWalker.walkRecursive(ControlTreeWalker.java:361)
	at com.bea.netuix.nf.ControlTreeWalker.walkRecursive(ControlTreeWalker.java:361)
	at com.bea.netuix.nf.ControlTreeWalker.walkRecursive(ControlTreeWalker.java:361)
	at com.bea.netuix.nf.ControlTreeWalker.walkRecursive(ControlTreeWalker.java:361)
	at com.bea.netuix.nf.ControlTreeWalker.walkRecursive(ControlTreeWalker.java:361)
	at com.bea.netuix.nf.ControlTreeWalker.walkRecursive(ControlTreeWalker.java:361)
	at com.bea.netuix.nf.ControlTreeWalker.walkRecursive(ControlTreeWalker.java:361)
	at com.bea.netuix.nf.ControlTreeWalker.walk(ControlTreeWalker.java:128)
	at com.bea.netuix.nf.Lifecycle.processLifecycles(Lifecycle.java:361)
 


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