#3 Error message upon install on Ooo3.1.1

[Anonymous]

Can't copy and paste error message so here it is typed out:

(com.sun.star.uno.RuntimeException) {{Message = "[jni_uno bridge error] UNO calling Java method writeRegistryInfo: non-UNO exception occurred: java.lang.UnsupportedClassVersionError: Bad version number in .class file\X000ajava stack trace:/X000ajava.lang.UnsupportedClassVersionError: Bad version number in .class file\X000a\X0009atjava.lang.ClassLoader.defineClass1(Native Method)\X000a\X0009atjava.lang.ClassLoader.defineClass(ClassLoader.java:675)\X000a\X0009atjava.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)\X000a\X0009atjava.net.URLClassLoader.defineClass(URLClassLoader.java:260)\X000a\X0009atjava.net.URLClassLoader.access$100(URLClassLoader.java:56)\X000a\X0009atjava.net.URLClassLoader$1.run(URLClassLoader.java:195)\X000a\X0009atjava.security.AccessController.doPrivileged(Native Method)\X000a\X0009atjava.net.URLClassLoader.findClass(URLClassLoader.java:188)\X000a\X0009atjava.lang.ClassLoader.loadClass(ClassLoader.java:316)\X000a\X0009atjava.lang.ClassLoader.loadClass(ClassLoaer.java:306)\X000A\X0009atjava.net.FactoryURLClassLoader.loadClass(URLClassLoader.java:579)\X000a\X0009at java.lang.ClassLoader.loadClass(ClassLoader.java:251)\X000a\X0009atcom.sun.star.comp.loader.RegistrationClassFinder.Find(RegistrationClassFinder.java:67)\X000a\X0009atcom.sun.star.comp.loader.JavaLoader.writeRegistryInfo(JavaLoader.java:433)\X000a", Context = (com.sun.star.uno.XInterface) @0}}

It looks like the error message involves something to do with java. I have the latest java version 1.5.0_20. My operating system is Mac OS X version 10.5.8. The install fails and opencard tab shows in open office but all selections are greyed out except advanced which its selections are greyed out. I downloaded the open card version 1.5.1. Thank you for any help in advance