When the address demo is run under Jetty, the following exception is produced upon changing pages:

4448 [main] INFO com.icesoft.faces.webapp.xmlhttp.ResponseStateManager - using response state
manager: com.icesoft.faces.webapp.xmlhttp.ResponseStateManager
4472 [main] INFO org.mortbay.log - Started SelectChannelConnector @ 0.0.0.0:8080
240720 [btpool0-1] ERROR org.mortbay.log - /address/block/receive-send-updates:
java.lang.NullPointerException
        at com.icesoft.faces.webapp.xmlhttp.ContinuationResponseState.cancel
(ContinuationResponseState.java:100)
        at com.icesoft.faces.webapp.xmlhttp.BlockingServlet.service(BlockingServlet.java:282)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
        at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:491)
        at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:367)
        at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:185)
        at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
        at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:690)
        at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:401)
        at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:146)
        at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
        at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139)
        at org.mortbay.jetty.Server.handle(Server.java:285)
        at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:457)
        at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:765)
        at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:628)
        at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:209)
        at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:357)
        at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:329)
        at org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:475)
240723 [btpool0-1] ERROR org.mortbay.log - /address/block/receive-send-updates
java.lang.NullPointerException
        at com.icesoft.faces.webapp.xmlhttp.ContinuationResponseState.cancel
(ContinuationResponseState.java:100)
        at com.icesoft.faces.webapp.xmlhttp.BlockingServlet.service(BlockingServlet.java:282)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
        at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:491)
        at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:367)
        at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:185)
        at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
        at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:690)
        at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:401)
        at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:146)
        at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
        at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139)
        at org.mortbay.jetty.Server.handle(Server.java:285)
        at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:457)
        at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:765)
        at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:628)
        at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:209)
        at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:357)
        at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:329)
        at org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:475)