org.w3c.dom.DOMException: NOT_FOUND_ERR: An attempt is made to reference a node in a context where it does not exist.
        at org.apache.xerces.dom.AttributeMap.removeItem(AttributeMap.java:0)
        at org.apache.xerces.dom.ElementImpl.removeAttributeNode(ElementImpl.java:0)
        at org.netbeans.modules.visualweb.insync.faces.MarkupProperty.removeEntry(MarkupProperty.java:217)
        at org.netbeans.modules.visualweb.insync.beans.Bean.unsetProperty(Bean.java:433)
        at org.netbeans.modules.visualweb.insync.live.BeansDesignProperty.unsetBeanProperty(BeansDesignProperty.java:385)
        at org.netbeans.modules.visualweb.insync.live.BeansDesignProperty.setBeanProperty(BeansDesignProperty.java:325)
        at org.netbeans.modules.visualweb.insync.live.BeansDesignProperty.setValue(BeansDesignProperty.java:404)
        at org.netbeans.modules.visualweb.insync.live.FacesDesignProperty.setValue(FacesDesignProperty.java:237)
        at org.netbeans.modules.visualweb.insync.live.DesignBeanNode$PropLink.setValue(DesignBeanNode.java:1352)
        at org.openide.explorer.propertysheet.SheetTable.checkEditBoolean(SheetTable.java:1170)
        at org.openide.explorer.propertysheet.SheetTable.editCellAt(SheetTable.java:1023)
        at javax.swing.plaf.basic.BasicTableUI$Handler.adjustSelection(BasicTableUI.java:1084)
        at javax.swing.plaf.basic.BasicTableUI$Handler.mousePressed(BasicTableUI.java:1014)
        at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:263)
        at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:262)
        at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:262)
        at java.awt.Component.processMouseEvent(Component.java:6213)
        at javax.swing.JComponent.processMouseEvent(JComponent.java:3265)
        at org.openide.explorer.propertysheet.SheetTable.processMouseEvent(SheetTable.java:719)
        at java.awt.Component.processEvent(Component.java:5981)
        at java.awt.Container.processEvent(Container.java:2041)
        at java.awt.Component.dispatchEventImpl(Component.java:4583)
        at java.awt.Container.dispatchEventImpl(Container.java:2099)
        at java.awt.Component.dispatchEvent(Component.java:4413)
        at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4556)
        at java.awt.LightweightDispatcher.processMouseEvent(LightweightDispatcher.java:4217)
        at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:4150)
        at java.awt.Container.dispatchEventImpl(Container.java:2085)
        at java.awt.Window.dispatchEventImpl(Window.java:2475)
        at java.awt.Component.dispatchEvent(Component.java:4413)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
        at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:104)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)