java.util.ConcurrentModificationException
   at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:914)
   at java.util.ArrayList$Itr.next(ArrayList.java:864)
   at org.netbeans.modules.cnd.makeproject.MakeProjectFileProviderFactory$FileProviderImpl.computeFiles(MakeProjectFileProviderFactory.java:427)
   at org.netbeans.modules.cnd.makeproject.MakeProjectFileProviderFactory$FileProviderImpl.computeFiles(MakeProjectFileProviderFactory.java:243)
   at org.netbeans.modules.jumpto.file.Worker$ProviderStrategy.execute(Worker.java:492)
   at org.netbeans.modules.jumpto.file.Worker.run(Worker.java:154)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1423)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2033)