Also, I assume you have read this bit in the troubleshooting section of the install instructions:

"Getting "java/lang/NoClassDefFoundError: java/lang/Object"
This is because java can’t find the “rt.jar” file specified by JAVA_HOME\lib\rt.jar.

Check that your JAVA_HOME setting is correct in your trio.bat or script
If you’ve installed the Java SDK rather than just the runtime, rt.jar might be in JAVA_HOME\jre\lib\rt.jar. If so, change your script/batch file."
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