There have been instances where a customer has used and imported an invalid SSL Certificate.  This can be easily backed out.  

Simply access the VERDE server that's running the Cluster Master.

SSH/Putty into the server and access the command line. 

At the command line, type the following three commands:

rm -f /home/vb-verde/.verde-local/server_conf.json

rm -f /home/vb-verde/.verde-local/security

/usr/lib/verde/bin/verde-start-tomcat.sh restart

Upon the successful restart of tomcat, access the Management Console (MC) as usual.  It will take slightly more time for the MC to come up.  Perhaps an additional 30 seconds.