NetRexx 3.07 is available for testing. You can download it from http://netrexx.org . If you run on a system without a javac java compiler, you should probably switch to it right away, as this version contains a fix for an error related to class file generation with dependent classes when compiling with the built-in ecj compiler, that has been present since 2015.
Please let me know how your experiences are. It should run on JVM’s in the range from 1.6 to 1.8, also called Java 6 up to and including Java 8. Please register any issues in the sourceforge project at https://sourceforge.net/projects/netrexx/ .