java.lang.NullPointerException
   at org.netbeans.modules.cnd.repository.storage.Storage.getFileName(Storage.java:577)
   at org.netbeans.modules.cnd.repository.storage.StorageManager.getFileNameByIdx(StorageManager.java:261)
   at org.netbeans.modules.cnd.repository.RepositoryImpl.getFileNameById(RepositoryImpl.java:291)
   at org.netbeans.modules.cnd.repository.api.Repository.getFileNameById(Repository.java:120)
   at org.netbeans.modules.cnd.modelimpl.repository.KeyUtilities.getFileNameById(KeyUtilities.java:201)
   at org.netbeans.modules.cnd.modelimpl.impl.services.ReferenceRepositoryImpl.findRelevantFiles(ReferenceRepositoryImpl.java:497)
   at org.netbeans.modules.cnd.refactoring.plugins.CsmRefactoringPlugin.getRelevantFiles(CsmRefactoringPlugin.java:269)
   at org.netbeans.modules.cnd.refactoring.plugins.CsmRenameRefactoringPlugin.getRefactoredFiles(CsmRenameRefactoringPlugin.java:223)
   at org.netbeans.modules.cnd.refactoring.plugins.CsmModificationRefactoringPlugin.prepare(CsmModificationRefactoringPlugin.java:93)
   at org.netbeans.modules.refactoring.api.AbstractRefactoring.pluginsPrepare2(AbstractRefactoring.java:442)
   at org.netbeans.modules.refactoring.api.AbstractRefactoring.pluginsPrepare(AbstractRefactoring.java:426)
   at org.netbeans.modules.refactoring.api.AbstractRefactoring.prepare(AbstractRefactoring.java:237)
   at org.netbeans.modules.refactoring.spi.impl.ParametersPanel$Prepare.run(ParametersPanel.java:1059)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1443)
   at org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:68)
   at org.openide.util.lookup.Lookups.executeWith(Lookups.java:303)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2058)