Unable to start BO Agent (upgrade from previous RA solution)

Document ID : KB000087687
Last Modified Date : 14/04/2018
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Error Message :
20160804/152916.579 - 1 java.lang.NullPointerException: Cannot invoke method logoff() on null object
at org.codehaus.groovy.runtime.NullObject.invokeMethod(NullObject.java:77)

RA Business Object agent 3.0.x fails when starting.
This is because  xbean-2.2.0.jar  needs to be removed/deleted from the Agent Lib folder.
This step is missing from the old documentation.

The documentation is now updated.
  1. Navigate to the following directory and delete any existing files.
    An Automation Engine UNIX agentbin/lib
    An Automation Engine Windows agentbin\lib
    An Applications Manager UNIX agentweb/classes_alt
    An Applications Manager Windows agentweb\classes_alt

Cause type:
Root Cause: see Description
This field was added on 30/03/2017. This article has not been updated yet. Refer to the "Description" or "Workaround" sections for solution information.

Fix Status: Released

Fix Version(s):
Additional Information:
Workaround :
Remove xbean-2.2.0.jar from the Agent Lib folder