Is there any interest in this? I got it working locally but it involved quite a few changes to the source. Basically the culprit is the Runtime.exec call, which just creates one big string to execute with quotes which OSX does not like. The correct approach is to call exec(String), so I had to make changes in various places to ensure that that is the call that is done. The authors of jadPlugin should switch to that method call IMHO as it's much safer. I can either upload an OSX version or patches for getting it to work.