addNode.sh script is giving Exception java.lang.NullPointerException occurred.. java.lang.NullPointe

 Customer receiving following error during addNode.sh script, please see below;


Starting Oracle Universal Installer...

Checking swap space: must be greater than 500 MB.   Actual 12800 MB    Passed
Oracle Universal Installer, Version 11.2.0.1.0 Production
Copyright (C) 1999, 2009, Oracle. All rights reserved.

Exception java.lang.NullPointerException occurred..
java.lang.NullPointerException
       at oracle.sysman.oii.oiic.OiicAddNodeSession.initialize(OiicAddNodeSession.java:528)
       at oracle.sysman.oii.oiic.OiicAddNodeSession.<init>(OiicAddNodeSession.java:133)
       at oracle.sysman.oii.oiic.OiicSessionWrapper.createNewSession(OiicSessionWrapper.java:884)
       at oracle.sysman.oii.oiic.OiicSessionWrapper.<init>(OiicSessionWrapper.java:191)
       at oracle.sysman.oii.oiic.OiicInstaller.init(OiicInstaller.java:512)
       at oracle.sysman.oii.oiic.OiicInstaller.runInstaller(OiicInstaller.java:968)
       at oracle.sysman.oii.oiic.OiicInstaller.main(OiicInstaller.java:906)