Thanks for replying.
The public cert. I got was :
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
I did convert it to other formats through the use of IE6, Tool>Internet Options>Content to import the certificate and export it as other format, then tried importing this converted-format cert. into my keystore. I still have the same error.
I searched the net for days and am still stuck with this same error.