I see the same issue on the Mac. Looks like it won't run with Java 1.5 anymore? I'm using java version "1.5.0_19"
This is the stack trace I see:
Code:
8/13/09 11:17:25 AM [0x0-0x3c03c].com.apple.JarLauncher[1025] Exception in thread "main" java.lang.UnsupportedClassVersionError: Bad version number in .class file
8/13/09 11:17:25 AM [0x0-0x3c03c].com.apple.JarLauncher[1025] at java.lang.ClassLoader.defineClass1(Native Method)
8/13/09 11:17:25 AM [0x0-0x3c03c].com.apple.JarLauncher[1025] at java.lang.ClassLoader.defineClass(ClassLoader.java:675)
8/13/09 11:17:25 AM [0x0-0x3c03c].com.apple.JarLauncher[1025] at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
8/13/09 11:17:25 AM [0x0-0x3c03c].com.apple.JarLauncher[1025] at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
8/13/09 11:17:25 AM [0x0-0x3c03c].com.apple.JarLauncher[1025] at java.net.URLClassLoader.access$100(URLClassLoader.java:56)
8/13/09 11:17:25 AM [0x0-0x3c03c].com.apple.JarLauncher[1025] at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
8/13/09 11:17:25 AM [0x0-0x3c03c].com.apple.JarLauncher[1025] at java.security.AccessController.doPrivileged(Native Method)
8/13/09 11:17:25 AM [0x0-0x3c03c].com.apple.JarLauncher[1025] at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
8/13/09 11:17:25 AM [0x0-0x3c03c].com.apple.JarLauncher[1025] at java.lang.ClassLoader.loadClass(ClassLoader.java:316)
8/13/09 11:17:25 AM [0x0-0x3c03c].com.apple.JarLauncher[1025] at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:280)
8/13/09 11:17:25 AM [0x0-0x3c03c].com.apple.JarLauncher[1025] at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
8/13/09 11:17:25 AM [0x0-0x3c03c].com.apple.JarLauncher[1025] at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:374)
8/13/09 11:17:25 AM [0x0-0x3c03c].com.apple.JarLauncher[1025] at jecomics.Main.main(Main.java:28)
If I make Java 6 the default JVM, it runs fine. Is it possible to get a version that runs in 1.5?