From: DeskNow Knowledge Base
http://www.desknow.com/kb/

I get this error when installing my SSL certificate: java.lang.Exception: Failed to establish chain from reply
http://www.desknow.com/kb/idx/13/065/article/
This means that the root certificate of the company (Certificate Authority, or CA in short) is not included in the JDK, like Verisgn's, Thawte's or others. You can import it manually.

See this article for instructions on how to import a CA root certificate:
http://access1.sun.com/techarticles/Keytool.html