java.lang.NullPointerException
	at org.netbeans.modules.refactoring.java.ui.tree.ElementGripFactory$Interval.createInterval(ElementGripFactory.java:119)
	at org.netbeans.modules.refactoring.java.ui.tree.ElementGripFactory.put(ElementGripFactory.java:75)
	at org.netbeans.modules.refactoring.java.api.JavaRefactoringUtils.cacheTreePathInfo(JavaRefactoringUtils.java:452)
	at org.netbeans.modules.refactoring.java.spi.RefactoringVisitor.rewrite(RefactoringVisitor.java:71)
	at org.netbeans.modules.refactoring.java.plugins.MoveTransformer.visitCompilationUnit(MoveTransformer.java:148)
	at org.netbeans.modules.refactoring.java.plugins.MoveTransformer.visitCompilationUnit(MoveTransformer.java:37)
	at com.sun.tools.javac.tree.JCTree$JCCompilationUnit.accept(JCTree.java:476)
	at com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:52)
	at org.netbeans.modules.refactoring.java.spi.JavaRefactoringPlugin$TransformTask.run(JavaRefactoringPlugin.java:250)
	at org.netbeans.modules.refactoring.java.spi.JavaRefactoringPlugin$TransformTask.run(JavaRefactoringPlugin.java:225)
	at org.netbeans.api.java.source.JavaSource.runModificationTask(JavaSource.java:747)
	at org.netbeans.modules.refactoring.java.spi.JavaRefactoringPlugin.processFiles(JavaRefactoringPlugin.java:214)
	at org.netbeans.modules.refactoring.java.plugins.MoveRefactoringPlugin.prepare(MoveRefactoringPlugin.java:225)
	at org.netbeans.modules.refactoring.api.AbstractRefactoring.pluginsPrepare(AbstractRefactoring.java:316)
	at org.netbeans.modules.refactoring.api.AbstractRefactoring.prepare(AbstractRefactoring.java:173)
	at org.netbeans.modules.refactoring.spi.impl.ParametersPanel$Prepare.run(ParametersPanel.java:708)
	at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:539)
[catch] at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:964)

java.lang.NullPointerException
	at org.netbeans.modules.refactoring.spi.impl.UndoWatcher.watch(UndoWatcher.java:53)
	at org.netbeans.modules.refactoring.spi.impl.ParametersPanel$8.run(ParametersPanel.java:332)
	at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:539)
[catch] at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:964)