Error during upgrade Rational Insight from V 1.1.1.1 to V 1.1.1.2

Hello Team

We upgraded the Rational Insight to V1.1.1.2 from V1.1.1.1 through installation manager.
After that we were running rrdi/setup and in that we are getting error during the deploy step in phase (Waiting for report server to initialize )
Rational insight is hosted in RHEL 6.4

We found below error in cognos logs:

9.121.57.138:9081       3485    2013-10-29 10:26:22.848 +5:30   na      na                      Thread-75       DISP    6235    1       Audit.Other.dispatcher.DISP.pogopogo    com.cognos.pogo.bibus.SOAPMessageOutputter              Failure <messages><message><messageString>DPR-DPR-1035 Dispatcher detected an error.</messageString></message><message><messageString>CAM-CRP-1114 Unable to find the Certificate Authority self-signed certificate with alias &apos;ca&apos; in the keystore &apos;/opt/IBM/RRDI/cognos/configuration/signkeypair/jCAKeystore&apos;.</messageString></message></messages>      Exception signing trusted request: CAM-CRP-1114 Unable to find the Certificate Authority self-signed certificate with alias 'ca' in the keystore '/opt/IBM/RRDI/cognos/configuration/signkeypair/jCAKeystore'.CAM-CRP-1114 Unable to find the Certificate Authority self-signed certificate with alias 'ca' in the keystore '/opt/IBM/RRDI/cognos/configuration/signkeypair/jCAKeystore'.       at com.cognos.accman.jcam.crypto.misc.KeyStoreReader.getCACertificate(KeyStoreReader.java:811)  at com.cognos.accman.jcam.crypto.misc.Configuration.isCAKeyPairValid(Configuration.java:1794)  at com.cognos.accman.jcam.crypto.CAMFactory.initialize(CAMFactory.java:176)      at com.cognos.pogo.bibus.CryptoFacility.createCAMFactory(CryptoFacility.java:89)       at com.cognos.pogo.bibus.CryptoFacility.createTrustedSession(CryptoFacility.java:59)     at com.cognos.pogo.bibus.CryptoFacility.fetchTrustedSession(CryptoFacility.java:105)    at com.cognos.pogo.bibus.CryptoFacility.signRequest(CryptoFacility.java:121)    at com.cognos.pogo.bibus.CryptoFacility.signTrustedRequest(CryptoFacility.java:249)     at com.cognos.pogo.util.CAMUtils.signRequest(CAMUtils.java:108) at com.cognos.pogo.bibus.SOAPMessageOutputter$Outputter.signTrustedRequest(SOAPMessageOutputter.java:216)       at com.cognos.pogo.bibus.SOAPMessageOutputter$SimpleOutputter.write(SOAPMessageOutputter.java:258)      at com.co 

Thanks in advance.