java.lang.NullPointerException
   at org.netbeans.modules.editor.indent.TaskHandler$MimeItem.indentRegions(TaskHandler.java:435)
   at org.netbeans.modules.editor.indent.spi.Context.indentRegions(Context.java:258)
   at org.netbeans.modules.java.source.save.Reformatter.reformat(Reformatter.java:140)
   at org.netbeans.modules.editor.indent.TaskHandler$MimeItem.runTask(TaskHandler.java:548)
   at org.netbeans.modules.editor.indent.TaskHandler.runTasks(TaskHandler.java:316)
   at org.netbeans.modules.editor.indent.IndentImpl.reformat(IndentImpl.java:357)
   at org.netbeans.modules.editor.indent.api.Reformat.reformat(Reformat.java:154)
   at org.netbeans.editor.ActionFactory.reformat(ActionFactory.java:1755)
   at org.netbeans.editor.ActionFactory$FormatAction$1$1.run(ActionFactory.java:1697)
   at org.netbeans.editor.GuardedDocument.runAtomicAsUser(GuardedDocument.java:344)
   at org.netbeans.editor.ActionFactory$FormatAction$1.run(ActionFactory.java:1684)
   at org.netbeans.modules.progress.ui.RunOffEDTImpl$1.run(RunOffEDTImpl.java:160)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1424)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1968)