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The following exception was thrown after hitting Refactoring for a class being moved (6.1M1): java.util.ConcurrentModificationException at java.util.LinkedList$ListItr.checkForComodification(LinkedList.java:761) at java.util.LinkedList$ListItr.next(LinkedList.java:696) at org.netbeans.modules.refactoring.api.RefactoringSession.doRefactoring(RefactoringSession.java:106) at org.netbeans.modules.refactoring.spi.impl.ParametersPanel$8.run(ParametersPanel.java:360) at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:561) [catch] at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:986) The class hasn't been moved.
Which build do you use?
6.1M1; I have mentioned it already.
Please upgrade to 6.5 release.