I cannot reproduce this issue, but due to the severity, I'm logging it in case anyone else sees it.
While navigating around Admin Console I got the following exception printed on the screen:
I see in server.log the following:
Caused by: java.lang.RuntimeException: java.lang.reflect.InvocationTargetException while attempting to process a 'beforeCreate' event for 'jmsHosts'.
I was not modifying jms hosts. I created a password alias, then clicked on an existing ssh node, looked at SSH User Authentication, then clicked on existing dcom node. That's when I got this exception.