I don't think that version you just linked is current. I think you're better off clicking on "Jemplode" at the top menu bar of this page and using that version. The one you linked is something like 2 years old now. Mike has made a gazillion bug fixes and improvements since then, and the correct version is linked from the top of this page.

Bitt could still be right about the JVM, I'm not sure, but at least try that Jemplode version and the latest JVM you can get from Sun.