When running the Engine class, I’m getting Package Class failures in Scala libraries, its expecting version 5.0 but found 5.2.
This looks to be coming from the maven integration, I’ve checked my global libraries and have 2.12.2 installed and JDK 1.8?. It looks like when doing the maven archetype generation etc its installing a package class of 3.6 (m2) ?.
Your class files have the format of JDK 8, which is the minimum version required for Scala 2.12 and up, so that’s normal. And it appears you are trying to run your code on a JRE of version 6 (I assume you robbed a museum?). So unfortunately that’s not going to work. Relatively modern versions of Scala require at least Java 8.
You may also want to upgrade your Scala version to at least 2.12.14. There should be no reason to stay on such an old minor version.