In a client-server set up where RMI requests are being sent back and forth, the following exception was being thrown:

Caused by: java.io.StreamCorruptedException: Inconsistent vector internals
        at java.util.Vector.readObject(Vector.java:1083)

This happened when the client and sever used differing JDK vendors, Oracle and IBM respectively in this case.

This issue did not occur when client and server both used the same JDK vendor.