#1 Crashes upon launch

[Sea Mac]

Application fails launch on MacPro3,1 OS X 10.5.8
Log follows:

6/11/10 11:39:31 AM [0x0-0x1ce1ce].com.apple.JarLauncher[7760] SystemFlippers: didn't consume all data for long ID 0 (pBase = 0x10014b5b0, p = 0x10014b5b4, pEnd = 0x10014b5b8)
6/11/10 11:39:31 AM [0x0-0x1ce1ce].com.apple.JarLauncher[7760] SystemFlippers: didn't consume all data for long ID 0 (pBase = 0x100126f20, p = 0x100126f24, pEnd = 0x100126f28)
6/11/10 11:39:33 AM [0x0-0x1ce1ce].com.apple.JarLauncher[7760] Exception
6/11/10 11:39:33 AM [0x0-0x1ce1ce].com.apple.JarLauncher[7760] in thread "main"
6/11/10 11:39:33 AM [0x0-0x1ce1ce].com.apple.JarLauncher[7760] java.lang.UnsupportedClassVersionError: Bad version number in .class file
6/11/10 11:39:33 AM [0x0-0x1ce1ce].com.apple.JarLauncher[7760] at java.lang.ClassLoader.defineClass1(Native Method)
6/11/10 11:39:33 AM [0x0-0x1ce1ce].com.apple.JarLauncher[7760] at java.lang.ClassLoader.defineClass(ClassLoader.java:676)
6/11/10 11:39:33 AM [0x0-0x1ce1ce].com.apple.JarLauncher[7760] at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
6/11/10 11:39:33 AM [0x0-0x1ce1ce].com.apple.JarLauncher[7760] at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
6/11/10 11:39:33 AM [0x0-0x1ce1ce].com.apple.JarLauncher[7760] at java.net.URLClassLoader.access$100(URLClassLoader.java:56)
6/11/10 11:39:33 AM [0x0-0x1ce1ce].com.apple.JarLauncher[7760] at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
6/11/10 11:39:33 AM [0x0-0x1ce1ce].com.apple.JarLauncher[7760] at java.security.AccessController.doPrivileged(Native Method)
6/11/10 11:39:33 AM [0x0-0x1ce1ce].com.apple.JarLauncher[7760] at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
6/11/10 11:39:33 AM [0x0-0x1ce1ce].com.apple.JarLauncher[7760] at java.lang.ClassLoader.loadClass(ClassLoader.java:317)
6/11/10 11:39:33 AM [0x0-0x1ce1ce].com.apple.JarLauncher[7760] at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:280)
6/11/10 11:39:33 AM [0x0-0x1ce1ce].com.apple.JarLauncher[7760] at java.lang.ClassLoader.loadClass(ClassLoader.java:252)