java.lang.NoClassDefFoundError: org/netbeans/modules/profiler/actions/SelfSamplerAction$Singleton
        at org.netbeans.modules.profiler.actions.SelfSamplerAction.getInstance(SelfSamplerAction.java:111)
Caused: java.lang.reflect.InvocationTargetException
        at sun.reflect.GeneratedMethodAccessor30.invoke(GeneratedMethodAccessor30.java:0)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.netbeans.core.startup.layers.BinaryFS$AttrImpl$MethodAndParams.invoke(BinaryFS.java:603)
        at org.netbeans.core.startup.layers.BinaryFS$AttrImpl.getValue(BinaryFS.java:536)
        at org.netbeans.core.startup.layers.BinaryFS$BFSBase.getAttribute(BinaryFS.java:382)
        at org.openide.filesystems.MultiFileObject.getAttribute(MultiFileObject.java:844)
        at org.openide.filesystems.MultiFileObject.getAttribute(MultiFileObject.java:793)
        at org.openide.filesystems.MultiFileObject.getAttribute(MultiFileObject.java:840)
        at org.openide.filesystems.MultiFileObject.getAttribute(MultiFileObject.java:793)
        at org.openide.filesystems.MultiFileObject.getAttribute(MultiFileObject.java:726)
        at org.netbeans.core.TimableEventQueue.createSelfSampler(TimableEventQueue.java:190)
        at org.netbeans.core.TimableEventQueue.run(TimableEventQueue.java:177)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:602)
        at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1084)