JDK 10 Profiler: When profiling "Selected Classes", intermittant java.lang.ClassNotFoundException is thrown

When profiling under JDK 10 and using "Selected Classes" option, the following error is thrown after clicking "Apply" and the profiled application starts up.  This occurred during one of the Profiler tests with the AnagramGame.

java.lang.ClassNotFoundException: java/lang/reflect/WeakPairMap$Pair
at java.base/java.lang.Class.forName0(Native Method)
at java.base/java.lang.Class.forName(Class.java:291)
at org.netbeans.lib.profiler.server.ProfilerInterface$InitiateProfilingThread.initiateInstrumentation(ProfilerInterface.java:165)
at org.netbeans.lib.profiler.server.ProfilerInterface$InitiateProfilingThread.run(ProfilerInterface.java:117)