Reproduced in build 060718_1.

To reproduce the bug:

- open a schema;
- create a new attribute of inline simple type;
- open Customizer for the inline simple type;
- select 'List' derivation method and press OK.

java.lang.ClassCastException:
org.netbeans.modules.xml.schema.model.impl.LocalSimpleTypeImpl cannot be cast to
org.netbeans.modules.xml.xam.Nameable
	at
org.netbeans.modules.xml.schema.ui.nodes.categorized.customizer.SimpleTypeCustomizer.applyChanges(SimpleTypeCustomizer.java:98)
	at
org.netbeans.modules.xml.xam.ui.customizer.AbstractComponentCustomizer.apply(AbstractComponentCustomizer.java:64)
	at
org.netbeans.modules.xml.schema.ui.basic.UIUtilities$2.actionPerformed(UIUtilities.java:295)
	at
org.netbeans.core.windows.services.NbPresenter$ButtonListener.actionPerformed(NbPresenter.java:1082)
	at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
	at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
	at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:377)
	at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:232)
	at
javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:236)
	at java.awt.Component.processMouseEvent(Component.java:5999)
	at javax.swing.JComponent.processMouseEvent(JComponent.java:3240)
	at java.awt.Component.processEvent(Component.java:5764)
	at java.awt.Container.processEvent(Container.java:1984)
	at java.awt.Component.dispatchEventImpl(Component.java:4407)
	at java.awt.Container.dispatchEventImpl(Container.java:2042)
	at java.awt.Component.dispatchEvent(Component.java:4237)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4248)
	at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3912)
	at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3842)
	at java.awt.Container.dispatchEventImpl(Container.java:2028)
	at java.awt.Window.dispatchEventImpl(Window.java:2405)
	at java.awt.Component.dispatchEvent(Component.java:4237)
[catch] at java.awt.EventQueue.dispatchEvent(EventQueue.java:600)
	at
java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:177)
	at java.awt.Dialog$1.run(Dialog.java:1039)
	at java.awt.Dialog$2.run(Dialog.java:1085)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.awt.Dialog.show(Dialog.java:1083)
	at org.netbeans.core.windows.services.NbPresenter.superShow(NbPresenter.java:816)
	at org.netbeans.core.windows.services.NbPresenter.doShow(NbPresenter.java:859)
	at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:847)
	at org.openide.util.Mutex.doEventAccess(Mutex.java:1178)
	at org.openide.util.Mutex.readAccess(Mutex.java:215)
	at org.netbeans.core.windows.services.NbPresenter.show(NbPresenter.java:832)
	at
org.netbeans.core.windows.services.NodeOperationImpl$2.run(NodeOperationImpl.java:92)
	at org.openide.util.Mutex.doEventAccess(Mutex.java:1178)
	at org.openide.util.Mutex.readAccess(Mutex.java:215)
	at
org.netbeans.core.windows.services.NodeOperationImpl.customize(NodeOperationImpl.java:88)
	at org.openide.actions.CustomizeAction.performAction(CustomizeAction.java:34)
	at org.openide.util.actions.NodeAction$DelegateAction$1.run(NodeAction.java:537)
	at
org.netbeans.modules.openide.util.ActionsBridge.doPerformAction(ActionsBridge.java:53)
	at
org.openide.util.actions.NodeAction$DelegateAction.actionPerformed(NodeAction.java:533)
	at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
	at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
	at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:377)
	at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:232)
	at javax.swing.AbstractButton.doClick(AbstractButton.java:357)
	at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1157)
	at
javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:1198)
	at java.awt.Component.processMouseEvent(Component.java:5999)
	at javax.swing.JComponent.processMouseEvent(JComponent.java:3240)
	at java.awt.Component.processEvent(Component.java:5764)
	at java.awt.Container.processEvent(Container.java:1984)
	at java.awt.Component.dispatchEventImpl(Component.java:4407)
	at java.awt.Container.dispatchEventImpl(Container.java:2042)
	at java.awt.Component.dispatchEvent(Component.java:4237)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4248)
	at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3912)
	at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3842)
	at java.awt.Container.dispatchEventImpl(Container.java:2028)
	at java.awt.Window.dispatchEventImpl(Window.java:2405)
	at java.awt.Component.dispatchEvent(Component.java:4237)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:600)
	at
java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183)
	at
java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:173)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)