RouteConverter and Mac OS X

[CalvinFold]

I'm running Mac OS X 10.5.8 on the machine the following information comes from.

From the command-line Terminal, using java -version:

java version "1.5.0_22"
Java™ 2 Runtime Environment, Standard Edition (build 1.5.0_22-b03-333-9M3125)
Java HotSpot™ Client VM (build 1.5.0_22-147, mixed mode, sharing)

From Terminal, using java -jar /Users/username/Desktop/RouteConverterMac.jar: (this is the latest version I downloaded)

Exception in thread "main" java.lang.UnsupportedClassVersionError: Bad version number in .class file
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:676)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
at java.net.URLClassLoader.access$100(URLClassLoader.java:56)
at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:317)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:280)
at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:375)

For log information, I need a more specific path to the file as /tmp is not enough information (there is no directory /tmp at the top level of the hard drive). I tried running 1.29 on this same machine and it brings-up a larger blank window and sometimes a smaller blank window. Attempts to drag-n-drop or otherwise do anything to the larger window will hang the application (requiring a Force Quit), and for some reason also really upsets iTunes. Trying to quit via command-Q will also hang the application.

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I just checked and Java 6 is also not available for Mac OS X 10.5.8 (from Apple, per Sun).

So my guess is that the latest version of RouteConverter only runs in Snow Leopard (10.6.x)? Can anyone confirm? Would be a downer, as we're not due to go to Snow Leopard until late this year at the soonest, too buggy.

That being the case, interested in getting any of the older versions of RouteConverter (1.29?) running.