We are Upgrading our application from jboss-4.0.2 to jboss-4.2.2.GA

Environment we are using is:

OS: Windows 2000 pro sp4
Server : jboss-4.2.2.GA

JDK:
java version "1.4.2_03"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_03-b02)
Java HotSpot(TM) Client VM (build 1.4.2_03-b02, mixed mode)


EJB project was deployed successfully
(Its giving one warning like
<wsdl-port> element in webservices.xml not namespace qualified )

But I am facing problems when I am deploying the web project….
The error message which server is showing is..

16:44:48,984 ERROR [STDERR] java.lang.ClassCastException: org.jboss.invocation.unified.interfaces.UnifiedInvokerPro
cannot be cast to org.jboss.invocation.Invoker
16:44:49,171 ERROR [STDERR] at org.jboss.invocation.InvocationContext.getInvoker(InvocationContext.java:103)
16:44:49,171 ERROR [STDERR] at org.jboss.invocation.InvokerInterceptor.invokeInvoker(InvokerInterceptor.java:22

16:44:49,187 ERROR [STDERR] at org.jboss.invocation.InvokerInterceptor.invoke(InvokerInterceptor.java:167)
16:44:49,187 ERROR [STDERR] at org.jboss.proxy.TransactionInterceptor.invoke(TransactionInterceptor.java:46)
16:44:49,187 ERROR [STDERR] at org.jboss.proxy.SecurityInterceptor.invoke(SecurityInterceptor.java:55)
16:44:49,187 ERROR [STDERR] at org.jboss.proxy.ejb.HomeInterceptor.invoke(HomeInterceptor.java:169)
16:44:49,187 ERROR [STDERR] at org.jboss.proxy.ClientContainer.invoke(ClientContainer.java:86)
16:44:49,187 ERROR [STDERR] at $Proxy1345.create(Unknown Source)

Plz , can anybody..help me