java.lang.IllegalStateException: Current state = FLUSHED, new state = CODING_END
   at java.nio.charset.CharsetEncoder.throwIllegalStateException(CharsetEncoder.java:951)
   at java.nio.charset.CharsetEncoder.encode(CharsetEncoder.java:537)
   at org.netbeans.api.queries.FileEncodingQuery$ProxyCharset$ProxyEncoder.implFlush(FileEncodingQuery.java:432)
   at java.nio.charset.CharsetEncoder.flush(CharsetEncoder.java:633)
   at java.nio.charset.CharsetEncoder.encode(CharsetEncoder.java:769)
   at java.nio.charset.CharsetEncoder.canEncode(CharsetEncoder.java:875)
   at java.nio.charset.CharsetEncoder.canEncode(CharsetEncoder.java:944)
   at org.netbeans.modules.xml.text.TextEditorSupport.saveDocument(TextEditorSupport.java:398)
   at org.netbeans.modules.xml.text.TextEditorSupport$Env.save(TextEditorSupport.java:646)
   at org.openide.actions.SaveAction.performAction(SaveAction.java:132)
   at org.openide.actions.SaveAction.performAction(SaveAction.java:102)
   at org.openide.actions.SaveAction$Delegate.actionPerformed(SaveAction.java:249)
   at org.openide.awt.ContextAction$Performer.actionPerformed(ContextAction.java:231)
   at org.openide.awt.ContextManager.actionPerformed(ContextManager.java:247)
   at org.openide.awt.ContextAction.actionPerformed(ContextAction.java:109)
   at org.openide.util.actions.ActionInvoker$1.run(ActionInvoker.java:93)
   at org.openide.util.actions.ActionInvoker$ActionRunnable.actionPerformed(ActionInvoker.java:162)
   at org.netbeans.core.ModuleActions.invokeAction(ModuleActions.java:109)
   at org.netbeans.modules.openide.actions.ActionsBridgeImpl.invokeAction(ActionsBridgeImpl.java:60)
   at org.openide.util.actions.ActionInvoker$ActionRunnable.doRun(ActionInvoker.java:153)
   at org.openide.util.actions.ActionInvoker$2.run(ActionInvoker.java:110)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1452)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2032)