ClassCastException: com.ibm.isc.datastore.runtime.WindowImpl incompatible with com.ibm.isclite.runtime.topology.FreeformWindow

Running Jazz for SM & Dashboard v1.1, Jazz load balancing config.  All works well but a web module that's been working for the last several versions & is working on a standalone dev environment, fails in the load balanced environment with the error:

[9/16/13 16:04:30:836 EDT] 000000a1 servlet       E com.ibm.ws.webcontainer.servlet.ServletWrapper service SRVE0068E: An exception was thrown by one of the service methods of the servlet [action] in application [isc]. Exception created : [java.lang.ClassCastException: com.ibm.isc.datastore.runtime.WindowImpl incompatible with com.ibm.isclite.runtime.topology.FreeformWindow
    at _ibmjsp.html.isclite._FreeFormContent._jspService(_FreeFormContent.java:297)
    at com.ibm.ws.jsp.runtime.HttpJspBase.service(HttpJspBase.java:99)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:668)
    at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1224)
    at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:774)
    at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:456)
    at com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.handleRequest(ServletWrapperImpl.java:178)
    at com.ibm.wsspi.webcontainer.servlet.GenericServletWrapper.handleRequest(GenericServletWrapper.java:122)
    at com.ibm.ws.jsp.webcontainerext.AbstractJSPExtensionServletWrapper.handleRequest(AbstractJSPExtensionServletWrapper.java:216)
.
.
.  more to the stack trace.

Has anyone run into this before ?  Tried uninstalling the web modules, restarting, then reinstalling & restarting again but still get the same errors.