Couldn't encrypt: null error in CMIS Job

[lalit jangra]

Hi,

I am using MCF 1.5.1 and connecting to alfresco 4.2.2 using CMIS connector.
For alfresco job, i am passing below query as parameter.

SELECT cmis:name FROM cmis:document WHERE
CONTAINS('PATH:/app:company_home/st:sites/cm:am/cm:documentLibrary//*') AND
cmis:createdBy NOT like '%System%' AND cmis:contentStreamLength > 0

But when i am trying to restart this job, i get this error and job does not
start.

ERROR 2014-09-08 12:24:54,604 (Startup thread) - Exception tossed: Couldn't
encrypt: null

org.apache.manifoldcf.core.interfaces.ManifoldCFException: Couldn't
encrypt: null

        at
org.apache.manifoldcf.core.system.ManifoldCF.addToHash(ManifoldCF.java:592)

        at
org.apache.manifoldcf.core.system.ManifoldCF.encrypt(ManifoldCF.java:647)

        at
org.apache.manifoldcf.core.system.ManifoldCF.hash(ManifoldCF.java:562)

        at
org.apache.manifoldcf.crawler.system.SeedingActivity.addSeedDocument(SeedingActivity.java:101)

        at
org.apache.manifoldcf.crawler.system.SeedingActivity.addSeedDocument(SeedingActivity.java:126)

        at
org.apache.manifoldcf.crawler.connectors.cmis.CmisRepositoryConnector.addSeedDocuments(CmisRepositoryConnector.java:761)

        at
org.apache.manifoldcf.crawler.system.StartupThread.run(StartupThread.java:153)

Caused by: java.lang.NullPointerException

        at
org.apache.manifoldcf.core.system.ManifoldCF.addToHash(ManifoldCF.java:587)

        ... 6 more

Please suggest.

Regards,
Lalit.