Error while saving & running the transformations/jobs in Kettle : Unexpected problem reading shared objects from XML file : null

What are shared objects in Kettle ?

The below pentaho wiki & info center gives the brief of the Shared object in Kettle. 

http://infocenter.pentaho.com/help/index.jsp?topic=%2Fpdi_user_guide%2Fconcept_pdi_usr_changing_the_pdi_home_dir.html

http://wiki.pentaho.com/display/EAI/.17+Shared+Objects



From the Menu bar


1) Click on Edit
2) Click on "Edit the kettle.properties file" to open it's properties.
3) Give value=50 for KETTLE_SHARED_OBJECTS variable
   i.e., KETTLE_SHARED_OBJECTS=50
4) Go back to the console and try saving the job and run it, now you will not get the error. 

Problem Image :

Solution Image :

Reference : 

http://forums.pentaho.com/showthread.php?93473-Unexpected-problem-reading-shared-objects-from-XML-file-null