ActiveChgImp:Error in Mapping EngineODIException: DIP_GEN_INITIALIZATION_EXCEPTION

Seems like this week will go to resolve OID issues for us. We had another issue in our dev OID setup, where synchronization with AD is not happening and log says this:
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ActiveChgImp:Error in Mapping EngineODIException: DIP_GEN_INITIALIZATION_EXCEPTION
java.lang.NullPointerException
at oracle.ldap.odip.util.DirUtils.getLastChgNum(DirUtils.java:48)
at oracle.ldap.odip.gsi.LDAPReader.initAvailableChgKey(LDAPReader.java:884)
at oracle.ldap.odip.gsi.LDAPReader.initialise(LDAPReader.java:250)
at oracle.ldap.odip.engine.AgentThread.readerInitialise(AgentThread.java:460)
at oracle.ldap.odip.engine.AgentThread.mapInitialise(AgentThread.java:509)
at oracle.ldap.odip.engine.AgentThread.execMapping(AgentThread.java:375)
at oracle.ldap.odip.engine.AgentThread.run(AgentThread.java:237)
ActiveChgImp:about to Update exec status
Updated Attributes
orclodipLastExecutionTime: 20090518024937
orclodipConDirLastAppliedChgNum: 0
orclOdipSynchronizationStatus: Mapping Failure, Agent Execution Not Attempted
orclOdipSynchronizationErrors: Profile Initialization Failure
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Metalink note: 276481.1 does help to understand the issue and that is with dipassistance. After checking $ORACLE_HOME/ldap/odi/conf/ActiveChgImp.cfg file we realized the issue. As this is not the correct file. To make is correct. I have to stop our second odiserv instance and disable ActiveChgImp profile from oidadmin.
Once that is done. We again modified the Import Connector profile with correct cfg file. and enable ActiveChgImp profile and start odiserv instance and vola now log file looks better.

Happy Troubleshooting !!!