RMI Serialisation issue.

Stack Trace seen :

Caused by: java.io.InvalidClassException: filter status: REJECTED
at java.io.ObjectInputStream.filterCheck(ObjectInputStream.java:1255)
at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1878)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1751)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2042)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1573)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2287)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2211)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2069)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1573)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:431)
at sun.rmi.registry.RegistryImpl_Stub.lookup(RegistryImpl_Stub.java:123)