MICHAEL PIPOLO For those who don't know how the heck to run this application on OS X because they can't find Java 1.5... here is the answer, painstakingly contrived for your benefit.
Go to http://www.apple.com/support/downloads/java2se50release1.html. Download the J2SE 5.0. Install.
Next, launch Applications/Utilities/Java/J2SE 5.0/Java Preferences.app and then change the "Use Version" box to J2SE 5.0. Next, drag J2SE 5.0 to the top of the list in the lower section, "Java Application Runtime Settings". Click Save and quit.
After that, the program worked fine.
(Version 0.4.1c)