java.lang.ClassCastException: org.netbeans.editor.ext.ExtSyntaxSupport cannot be cast to org.netbeans.modules.xml.text.syntax.XMLSyntaxSupport at org.netbeans.modules.xml.schema.completion.SchemaBasedCompletionProvider.getAutoQueryTypes(SchemaBasedCompletionProvider.java:79) at org.netbeans.modules.editor.completion.CompletionImpl.insertUpdate(CompletionImpl.java:350) at org.netbeans.lib.editor.util.swing.PriorityDocumentListenerList.insertUpdate(PriorityDocumentListenerList.java:85) at javax.swing.text.AbstractDocument.fireInsertUpdate(AbstractDocument.java:201) at org.netbeans.editor.BaseDocument.fireInsertUpdate(BaseDocument.java:1659) at org.netbeans.editor.BaseDocument.handleInsertString(BaseDocument.java:847) at org.netbeans.editor.BaseDocument.insertString(BaseDocument.java:768) at org.netbeans.editor.BaseKit$DefaultKeyTypedAction.insertString(BaseKit.java:1348) at org.netbeans.editor.BaseKit$DefaultKeyTypedAction.performTextInsertion(BaseKit.java:1414) at org.netbeans.editor.BaseKit$DefaultKeyTypedAction.access$100(BaseKit.java:1077) at org.netbeans.editor.BaseKit$DefaultKeyTypedAction$3.run(BaseKit.java:1280) at org.netbeans.editor.GuardedDocument.runAtomicAsUser(GuardedDocument.java:356) at org.netbeans.editor.BaseKit$DefaultKeyTypedAction.actionPerformed(BaseKit.java:1256) at org.netbeans.editor.ext.ExtKit$ExtDefaultKeyTypedAction.actionPerformed(ExtKit.java:1080) at org.netbeans.editor.BaseAction.actionPerformed(BaseAction.java:347) at javax.swing.SwingUtilities.notifyAction(SwingUtilities.java:1663) at javax.swing.JComponent.processKeyBinding(JComponent.java:2882) at javax.swing.JComponent.processKeyBindings(JComponent.java:2929) at javax.swing.JComponent.processKeyEvent(JComponent.java:2845) at org.netbeans.modules.debugger.ui.models.ColumnModels$WatchesTableCellEditor$WatchesEditorPane.processKeyEvent(ColumnModels.java:795) at java.awt.Component.processEvent(Component.java:6310) at java.awt.Container.processEvent(Container.java:2236) at java.awt.Component.dispatchEventImpl(Component.java:4889) at java.awt.Container.dispatchEventImpl(Container.java:2294) at java.awt.Component.dispatchEvent(Component.java:4711) at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1954) at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:806) at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:1074) at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:945) at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:771) at java.awt.Component.dispatchEventImpl(Component.java:4760) at java.awt.Container.dispatchEventImpl(Container.java:2294) at java.awt.Window.dispatchEventImpl(Window.java:2746) at java.awt.Component.dispatchEvent(Component.java:4711) at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758) at java.awt.EventQueue.access$500(EventQueue.java:97) at java.awt.EventQueue$3.run(EventQueue.java:709) at java.awt.EventQueue$3.run(EventQueue.java:703) at java.security.AccessController.doPrivileged(AccessController.java:0) at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80) at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:90) at java.awt.EventQueue$4.run(EventQueue.java:731) at java.awt.EventQueue$4.run(EventQueue.java:729) at java.security.AccessController.doPrivileged(AccessController.java:0) at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80) at java.awt.EventQueue.dispatchEvent(EventQueue.java:728) at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93) at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)