java.lang.NullPointerException
   at org.netbeans.lib.profiler.results.cpu.CPUCallGraphBuilder.plainMethodEntry(CPUCallGraphBuilder.java:1181)
   at org.netbeans.lib.profiler.results.cpu.CPUCallGraphBuilder.plainMethodEntry(CPUCallGraphBuilder.java:1241)
   at org.netbeans.lib.profiler.results.cpu.CPUCallGraphBuilder.methodEntry(CPUCallGraphBuilder.java:211)
   at org.netbeans.lib.profiler.results.cpu.StackTraceSnapshotBuilder.addMethodEntries(StackTraceSnapshotBuilder.java:528)
   at org.netbeans.lib.profiler.results.cpu.StackTraceSnapshotBuilder.processDiffs(StackTraceSnapshotBuilder.java:501)
   at org.netbeans.lib.profiler.results.cpu.StackTraceSnapshotBuilder.processDiffs(StackTraceSnapshotBuilder.java:445)
   at org.netbeans.lib.profiler.results.cpu.StackTraceSnapshotBuilder.processThreadDump(StackTraceSnapshotBuilder.java:374)
   at org.netbeans.lib.profiler.results.cpu.StackTraceSnapshotBuilder.addStacktrace(StackTraceSnapshotBuilder.java:310)
   at org.netbeans.lib.profiler.results.cpu.CPUSamplingDataFrameProcessor.processCollectedDumps(CPUSamplingDataFrameProcessor.java:296)
   at org.netbeans.lib.profiler.results.cpu.CPUSamplingDataFrameProcessor.doProcessDataFrame(CPUSamplingDataFrameProcessor.java:229)
   at org.netbeans.lib.profiler.results.AbstractDataFrameProcessor.processDataFrame(AbstractDataFrameProcessor.java:97)
   at org.netbeans.lib.profiler.results.ProfilingResultsDispatcher$3.run(ProfilingResultsDispatcher.java:203)
   at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
   at java.util.concurrent.FutureTask.run(FutureTask.java:266)
   at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
   at java.lang.Thread.run(Thread.java:745)