NoClassDefFoundError performing remote lookup of dynamic proxy using IBM JDK

Using the IBM JDKs listed in the environment, performing a remote lookup of a dynamic proxy from within JBoss cases a NoClassDefFoundError.

java.lang.NoClassDefFoundError: $Proxy59
at sun.reflect.GeneratedSerializationConstructorAccessor49.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Constructor.java:521)
at java.io.ObjectStreamClass.newInstance(ObjectStreamClass.java:951)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1713)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1314)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:354)
at java.rmi.MarshalledObject.get(MarshalledObject.java:163)
at org.jnp.interfaces.MarshalledValuePair.get(MarshalledValuePair.java:72)
at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:652)
at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:587)
at javax.naming.InitialContext.lookup(InitialContext.java:363)