What does "java.lang.ClassFormatError: Unknown constant tag 114" in the JBoss server.log mean?

Solution Verified - Updated -

Issue

  • The following error appears in log/server.log:

    2010-05-12 17:49:11,026 WARN  [org.jboss.detailed.classloader.ClassLoaderManager] (main) Unexpected error during load of:org.jboss.ejb.plugins.keygenerator.hilo.HiLoKeyGeneratorFactoryMBean
java.lang.ClassFormatError: Unknown constant tag 114 in class file org/jboss/ejb/plugins/keygenerator/hilo/HiLoKeyGeneratorFactoryMBean
    at java.lang.ClassLoader.defineClass1(Native Method)
    ...

Environment

  • JBoss Enterprise Application Platform (EAP) 5.0

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