java.lang.AssertionError
	at org.netbeans.modules.form.RefactoringInfo.getUpdateForFile(RefactoringInfo.java:149)
	at org.netbeans.modules.form.GuardedBlockHandlerFactoryImpl$GuardedBlockHandlerImpl.handleChange(GuardedBlockHandlerFactoryImpl.java:98)
	at org.netbeans.modules.refactoring.spi.RefactoringElementsBag.add(RefactoringElementsBag.java:111)
	at org.netbeans.modules.refactoring.java.spi.JavaRefactoringPlugin.createAndAddElements(JavaRefactoringPlugin.java:261)
	at org.netbeans.modules.refactoring.java.spi.JavaRefactoringPlugin.createAndAddElements(JavaRefactoringPlugin.java:268)
	at org.netbeans.modules.refactoring.java.plugins.RenameRefactoringPlugin.prepare(RenameRefactoringPlugin.java:440)
	at org.netbeans.modules.refactoring.api.AbstractRefactoring.pluginsPrepare(AbstractRefactoring.java:380)
	at org.netbeans.modules.refactoring.api.AbstractRefactoring.prepare(AbstractRefactoring.java:202)
	at org.netbeans.modules.refactoring.spi.impl.ParametersPanel$Prepare.run(ParametersPanel.java:765)
	at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:561)
[catch] at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:986)