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A fatal exception occurred: Bad version number in .class file
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A fatal exception occurred: Bad version number in .class file


  • Subject: A fatal exception occurred: Bad version number in .class file
  • From: David Holt <email@hidden>
  • Date: Tue, 12 Feb 2013 15:44:57 -0800

Hi all,

I'm trying to deploy to a server running Java 1.5 and I am getting the error A fatal exception occurred: Bad version number in .class file when I start up the app.

So on my development box:

I deleted all my frameworks.

I installed the binaries of Wonder Integration from Jenkins.

I have the compiler settings set to 1.5 in Eclipse, I deleted my frameworks' bin folders, then built inside Eclipse using Ant install....

Does anyone know how I could still be getting 1.6 byte code?

Thanks,
David


Feb 12 15:32:40 APP [50883] WARN  NSLog  - A fatal exception occurred: Bad version number in .class file
[2013-2-12 15:32:40 PST] <main> java.lang.UnsupportedClassVersionError: Bad version number in .class file
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
	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:306)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
	at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
	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:306)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
	at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
	at er.extensions.appserver.ERXApplication.installPatches(ERXApplication.java:1064)
	at er.extensions.appserver.ERXApplication.<init>(ERXApplication.java:1147)
	at ca.cscw.app.appserver.Application.<init>(Application.java:18)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:494)
	at java.lang.Class.newInstance0(Class.java:350)
	at java.lang.Class.newInstance(Class.java:303)
	at com.webobjects.appserver.WOApplication.main(WOApplication.java:547)
	at er.extensions.appserver.ERXApplication.main(ERXApplication.java:861)
	at ca.cscw.app.appserver.Application.main(Application.java:15)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:585)
	at com.webobjects._bootstrap.WOBootstrap.main(WOBootstrap.java:87)
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