Thanks for the replies,
The Webshpere/AIX versions are the same for both systems but they run on separate LPARS so different Websphere JVMs. Wondering if there is some file encryption in some /etc/* file that is unique to the separate AIX boxes regarding WebSphere. It's odd only a small part of the application throws the java.lang.ClassCastException error everything else functions normally. I will see if i can find and search for class CNContextImpl in the .jar files Mikalai referenced.
Thanks I truly am a 'greenhorn' here appreciate the help.