The issue is due to new security features added in to the update. What you will need to do is add the Drac to the Java Exception Site List. Once there the error should stop.
You can find more about the update here - https://blogs.oracle.com/java-platform-group/entry/new_security_requirements_for_rias
Exception Site List:
The Exception Site List feature allows end users to run Java applets and Java Web Start applications that do not meet the latest security requirements. Rich Internet Applications that are hosted on a site in the exception site list are allowed to run with the applicable security prompts.
Manual Exception Site List:
Let me know if this helps.
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