java.lang.AssertionError: Token length=0 <= 0
	at org.netbeans.lib.lexer.token.DefaultToken.<init>(DefaultToken.java:49)
	at org.netbeans.spi.lexer.TokenFactory.createToken(TokenFactory.java:101)
	at org.netbeans.spi.lexer.TokenFactory.createToken(TokenFactory.java:75)
	at org.netbeans.lib.xml.lexer.XMLLexer.token(XMLLexer.java:888)
	at org.netbeans.lib.xml.lexer.XMLLexer.nextToken(XMLLexer.java:244)
	at org.netbeans.lib.lexer.LexerInputOperation.nextToken(LexerInputOperation.java:250)
	at org.netbeans.lib.lexer.inc.TokenListUpdater.update(TokenListUpdater.java:321)
	at org.netbeans.lib.lexer.TokenHierarchyOperation.textModified(TokenHierarchyOperation.java:221)
	at org.netbeans.spi.lexer.TokenHierarchyControl.textModified(TokenHierarchyControl.java:81)
	at org.netbeans.lib.lexer.inc.DocumentInput.modified(DocumentInput.java:115)
	at org.netbeans.lib.lexer.inc.DocumentInput.insertUpdate(DocumentInput.java:104)
	at org.netbeans.lib.editor.util.swing.PriorityDocumentListenerList.insertUpdate(PriorityDocumentListenerList.java:48)
	at javax.swing.text.AbstractDocument.fireInsertUpdate(AbstractDocument.java:184)
	at org.netbeans.editor.BaseDocument.fireInsertUpdate(BaseDocument.java:1358)
	at org.netbeans.editor.BaseDocument.insertString(BaseDocument.java:653)
	at org.netbeans.editor.BaseKit$DefaultKeyTypedAction.insertString(BaseKit.java:933)
	at org.netbeans.editor.BaseKit$DefaultKeyTypedAction.actionPerformed(BaseKit.java:897)
	at org.netbeans.editor.ext.ExtKit$ExtDefaultKeyTypedAction.actionPerformed(ExtKit.java:859)
	at org.netbeans.editor.BaseAction.actionPerformed(BaseAction.java:258)
	at javax.swing.SwingUtilities.notifyAction(SwingUtilities.java:1571)
	at javax.swing.JComponent.processKeyBinding(JComponent.java:2772)
	at javax.swing.JComponent.processKeyBindings(JComponent.java:2807)
	at javax.swing.JComponent.processKeyEvent(JComponent.java:2735)
	at java.awt.Component.processEvent(Component.java:5278)
	at java.awt.Container.processEvent(Container.java:1966)
	at java.awt.Component.dispatchEventImpl(Component.java:3968)
	at java.awt.Container.dispatchEventImpl(Container.java:2024)
	at java.awt.Component.dispatchEvent(Component.java:3803)
	at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1826)
	at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:677)
	at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:934)
	at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:806)
	at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:641)
	at java.awt.Component.dispatchEventImpl(Component.java:3841)
	at java.awt.Container.dispatchEventImpl(Container.java:2024)
	at java.awt.Window.dispatchEventImpl(Window.java:1778)
	at java.awt.Component.dispatchEvent(Component.java:3803)
[catch] at java.awt.EventQueue.dispatchEvent(EventQueue.java:463)
	at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)