Identification of the place of Error- java.lang.IncompatibleClass ChangeError

[Rajan.J.T, AMB Chennai]

Hi,
        I tried to invoke an EJb from a JSP..
        I faced an Error . No message is assosiated with the Error thrown.
        I'm using Weblogic 5.1 and jdk1.3

        I tried the same thing with a servlet by converting the JSP to a
servlet and the same example works fine.

        Can someove throw light on this Error and describe the cause of
this.
Thanks in adv.,
Rajan J.T.

        The stacktrace is

java.lang.IncompatibleClassChangeError
        at jsp_servlet._test._rajan._jspService(_rajan.java:118)
        at weblogic.servlet.jsp.JspBase.service(JspBase.java:27)
        at
weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
pl.java:105)
        at
weblogic.servlet.internal.ServletContextImpl.invokeServlet(ServletCon
textImpl.java:742)
        at
weblogic.servlet.internal.ServletContextImpl.invokeServlet(ServletCon
textImpl.java:686)
        at
weblogic.servlet.internal.ServletContextManager.invokeServlet(Servlet
ContextManager.java:247)
        at
weblogic.socket.MuxableSocketHTTP.invokeServlet(MuxableSocketHTTP.jav
a:361)
        at
weblogic.socket.MuxableSocketHTTP.execute(MuxableSocketHTTP.java:261)

        at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)

The code of JSP is

                InitialContext ic = new InitialContext( new Properties() );
                CatalogHome home = ( CatalogHome ) ic.lookup("CatalogJNDI");
                remote = home.create();
                Item it = remote.getItem("1"); // Place of Error. Commenting
this avoids the Error. But this is the basic business method.
                remote.remove();

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