[jBoss-User] IncompatibleClassChangeError trying to create a bean

[Scott Bader]

I'm trying to create a bean, but I'm getting a
java.lang.IncompatibleClassChangeError,
when I call create() on the home interface. 

Has anyone seen this before, or can suggest how to troubleshoot?

I'm running jboss 1.0 (from binary dated 5-11-2000).

Thanks,
Scott

Here's a snippet of my source code:

        initialContext = getInitialContext(vendor);
        log("Got initial context");

        /** Call JNDI to look up the home interface **/
        EJBHome ejbHome = (javax.ejb.EJBHome) initialContext.lookup(jndiName);
        log("Got ejbhome interface");

        // Cast to the bean's Home interface
        home = (EJB_DSHome) ejbHome;
        log("Got bean home interface");
        EJBTestClient client = null;

        /**
          * Ask factory for a new instance of the bean.
         */
        remote = home.create();


Here's the output I'm getting:

Got initial context
Got ejbhome interface
Got bean home interface
Exception in thread "main" java.lang.IncompatibleClassChangeError:
Implementing class
        at java.lang.ClassLoader.defineClass0(Native Method)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:486)
        at
java.security.SecureClassLoader.defineClass(SecureClassLoader.java:111)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:248)
        at java.net.URLClassLoader.access$100(URLClassLoader.java:56)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:297)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:286)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:253)
        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:313)
        at java.lang.Class.getFields0(Native Method)
        at java.lang.Class.getDeclaredFields(Class.java:998)
        at java.io.ObjectStreamClass$1.run(ObjectStreamClass.java:340)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.io.ObjectStreamClass.init(ObjectStreamClass.java:293)
        at
java.io.ObjectStreamClass.lookupInternal(ObjectStreamClass.java:112)
        at
java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:291)
        at
org.ejboss.container.ProxyContainer.invoke(ProxyContainer.java:182)
        at
org.ejboss.container.ProxyContainerForHome.invoke(ProxyContainerForHome.java:109)
        at $Proxy0.create(Unknown Source)
        at ejbtests.TestEJB_DS.<init>(TestEJB_DS.java:58)
        at ejbtests.EJBTestClient.main(EJBTestClient.java:51)


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