java.lang.NullPointerException
        at org.netbeans.lib.profiler.results.cpu.CPUCallGraphBuilder.plainMethodEntry(CPUCallGraphBuilder.java:1211)
        at org.netbeans.lib.profiler.results.cpu.CPUCallGraphBuilder.plainMethodEntry(CPUCallGraphBuilder.java:1259)
        at org.netbeans.lib.profiler.results.cpu.CPUCallGraphBuilder.methodEntry(CPUCallGraphBuilder.java:423)
        at org.netbeans.lib.profiler.results.cpu.CPUDataFrameProcessor$2.execute(CPUDataFrameProcessor.java:402)
        at org.netbeans.lib.profiler.results.AbstractDataFrameProcessor.foreachListener(AbstractDataFrameProcessor.java:145)
        at org.netbeans.lib.profiler.results.cpu.CPUDataFrameProcessor.fireMethodEntry(CPUDataFrameProcessor.java:400)
        at org.netbeans.lib.profiler.results.cpu.CPUDataFrameProcessor.doProcessDataFrame(CPUDataFrameProcessor.java:185)
        at org.netbeans.lib.profiler.results.AbstractDataFrameProcessor.processDataFrame(AbstractDataFrameProcessor.java:85)
        at org.netbeans.lib.profiler.results.ProfilingResultsDispatcher$1.run(ProfilingResultsDispatcher.java:128)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
        at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
        at java.util.concurrent.FutureTask.run(FutureTask.java:138)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
        at java.lang.Thread.run(Thread.java:619)