Thanks for your replies. It seems to me that Seam uses JBPM in a very dirty way. I think the Web Console is one of the advantages of JBPM. I can use it to monitor the current tasks and the state of the business processes. Without the console i have just the nearly undocumented built-in components and a database, where i can look what happens in a very uncomfortable way. That makes the use of business processes in this way (Seam + JBPM) unattractive. It's like a black box where i put some process definitions and then i hope everything runs as expected. 1. Can you tell me where i can find it in the JBPM Wiki? I tried to use this .war archive. http://wiki.jboss.org/wiki/Wiki.jsp?page=JbpmWebConsole 2. The version looked to be right for my jboss platform (AS 4.0.5, SEAM 1.2.0). I deployed it and then tried to access it (http://localhos:8080/jpbm/) but i get the following error, whats the problem? 2008-02-04 18:35:52,113 DEBUG [org.jbpm.webapp.filter.LogFilter] request http://localhost:8080/jbpm/ | 2008-02-04 18:35:52,113 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[localhost].[/jbpm].[jsp]] Servlet.service() for servlet jsp threw exception | java.lang.NoClassDefFoundError | at java.lang.Class.forName0(Native Method) | at java.lang.Class.forName(Class.java:164) | at org.jbpm.webapp.context.Context.getPersistenceContext(Context.java:33) | at org.jbpm.webapp.filter.PersistenceFilter.doFilter(PersistenceFilter.java:22) | at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) | at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) | at org.jbpm.webapp.filter.ContextFilter.doFilter(ContextFilter.java:19) | at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) | at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) | at org.jbpm.webapp.filter.LogFilter.doFilter(LogFilter.java:38) | at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) | at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) | at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96) | at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) | at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) | at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213) | at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178) | at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175) | at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74) | at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126) | at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105) | at org.jboss.web.tomcat.tc5.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:156) | at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107) | at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148) | at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869) | at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664) | at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527) | at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112) | at java.lang.Thread.run(Thread.java:595) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4126291#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...