The Automation Engine Client applications like Automation Engine Pilot, Shuttle, Diagnostics and Script Runner need a Java Runtime Environment(JRE). When you have installed these applications from ServerAdmin on Mac, they will use the Java 1.6 Runtime Environment provided by Apple.
However, Apple has stopped the development of Java Runtime Environment. Newer versions are provided by Oracle.
Starting from Automation Engine 16, you can run the above Automation Engine Client applications using an embedded Java Runtime Environment 1.8 from Oracle.
Follow the steps given below to install the Automation Engine Client Applications with embedded JRE 8:
Open your internet browser.
Type http://<AutomationEngineHost>:9999 (Replace <AutomationEngineHost> by the name of the computer where Automation Engine is installed).
Click the Download button while pressing the ALT key. The text of the Download button will change into Download (JRE 8).