I cannot get the BRMS to run on JBoss AS 4.2.1. (on Windows Vista).

Any help/hints to fix this will be appreciated. This is the error I get:

12:19:03,577 INFO  [STDOUT] ERROR 26-10 12:19:03,576 (Contexts.java:flushAndDestroyContexts:335)     could not discover
transaction status
12:19:03,579 INFO  [STDOUT] ERROR 26-10 12:19:03,578 (StandardWrapperValve.java:invoke:278)      Servlet.service() for s
ervlet default threw exception
java.lang.IllegalStateException: Cannot create a session after the response has been committed
        at org.apache.catalina.connector.Request.doGetSession(Request.java:2284)
        at org.apache.catalina.connector.Request.getSession(Request.java:2066)
        at org.apache.catalina.connector.RequestFacade.getSession(RequestFacade.java:833)
        at org.jboss.seam.servlet.ServletRequestSessionMap.put(ServletRequestSessionMap.java:87)
        at org.jboss.seam.servlet.ServletRequestSessionMap.put(ServletRequestSessionMap.java:25)
        at org.jboss.seam.contexts.BasicContext.set(BasicContext.java:80)
        at org.jboss.seam.Component.newInstance(Component.java:1980)
        at org.jboss.seam.Component.getInstance(Component.java:1878)
        at org.jboss.seam.Component.getInstance(Component.java:1857)
        at org.jboss.seam.Component.getInstance(Component.java:1834)
        at org.jboss.seam.web.Session.getInstance(Session.java:122)
        at org.jboss.seam.contexts.Contexts.flushAndDestroyContexts(Contexts.java:375)
        at org.jboss.seam.contexts.Lifecycle.endRequest(Lifecycle.java:132)
        at org.jboss.seam.servlet.ContextualHttpServletRequest.run(ContextualHttpServletRequest.java:65)
        at org.jboss.seam.web.ContextFilter.doFilter(ContextFilter.java:37)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
        at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179)
        at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
        at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:241)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:580)
        at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
        at java.lang.Thread.run(Thread.java:595)

Thanks,
--Aziz