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Nermal

Moderator
Original poster
Staff member
Dec 7, 2002
21,487
5,376
New Zealand
A friend sent me a link to this, but I get a blank area with a little red X when I try to view it in Safari. if I download the jar and launch it, I get a rather generic "failed to launch" error. The console contains the message "java.lang.UnsupportedClassVersionError: Bad version number in .class file".

It works for him, so can someone here please try it and see what happens? I have Leopard with all the latest updates.

Thanks :)
 
This may be a Java 1.6 issue or whatever. I had problems similar to this before. And it did not run for me.
 
Java Console says
Code:
java.lang.UnsupportedClassVersionError: Bad version number in .class file
	at java.lang.ClassLoader.defineClass2(Native Method)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:719)
	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:160)
	at java.net.URLClassLoader.defineClass(URLClassLoader.java:254)
	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 sun.applet.AppletClassLoader.findClass(AppletClassLoader.java:147)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
	at sun.applet.AppletClassLoader.loadClass(AppletClassLoader.java:119)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
	at sun.applet.AppletClassLoader.loadCode(AppletClassLoader.java:591)
	at sun.applet.AppletPanel.createApplet(AppletPanel.java:723)
	at sun.plugin.AppletViewer.createApplet(AppletViewer.java:1863)
	at sun.applet.AppletPanel.runLoader(AppletPanel.java:652)
	at sun.applet.AppletPanel.run(AppletPanel.java:326)
	at java.lang.Thread.run(Thread.java:613)

which happens when a computer has the wrong version of java, so it does seem to be a 1.6 error (which apple needs to release soon for stuff like this)
 
Yep, even tried it in XP and no go. It's the website, it's not your Mac.
 
So it looks like it's written in the new version of Java then. That was my initial suspicion, although it boggles the mind as to why somebody would make a site targetting a developer preview of the runtime. Does anybody know whether it's "safe" to install the DP without breaking anything important?
 
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