Dear JBPM DEV:

         Glad to know JBPM 5.2 released, Thanks!

         I’m test the migration JPDL3.2 to BPMN2.0 function in drools-guvnor, but found an error in server log in jboss.

         Show you:

10:20:53,581 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[default-host].[/designer].[TransformerServlet]] (http-localhost-127.0.0.1-8080-5) Servlet.service() for servlet TransformerServlet threw exception: java.lang.ClassNotFoundException: org.apache.xalan.trace.TraceListener from [Module "deployment.designer.war:main" from Service Module Loader]

         at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:191)

         at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:361)

         at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:333)

         at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:310)

         at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:103)

         at org.jbpm.migration.JbpmMigration.transform(JbpmMigration.java:98) [jbpmmigration-0.10-SNAPSHOT.jar:]

         at com.intalio.web.server.TransformerServlet.doPost(TransformerServlet.java:202) [classes:]

         at javax.servlet.http.HttpServlet.service(HttpServlet.java:754) [jboss-servlet-api_3.0_spec-1.0.0.Final.jar:1.0.0.Final]

         at javax.servlet.http.HttpServlet.service(HttpServlet.java:847) [jboss-servlet-api_3.0_spec-1.0.0.Final.jar:1.0.0.Final]

         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:329) [jbossweb-7.0.1.Final.jar:7.0.2.Final]

         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.1.Final.jar:7.0.2.Final]

         at com.intalio.web.filter.impl.PluggableFilter.doFilter(PluggableFilter.java:75) [classes:]

         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280) [jbossweb-7.0.1.Final.jar:7.0.2.Final]

         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.1.Final.jar:7.0.2.Final]

         at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:275) [jbossweb-7.0.1.Final.jar:7.0.2.Final]

         at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161) [jbossweb-7.0.1.Final.jar:7.0.2.Final]

         at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:139) [jboss-as-web-7.0.2.Final.jar:7.0.2.Final]

         at org.jboss.as.web.NamingValve.invoke(NamingValve.java:57) [jboss-as-web-7.0.2.Final.jar:7.0.2.Final]

         at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:154) [jbossweb-7.0.1.Final.jar:7.0.2.Final]

         at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) [jbossweb-7.0.1.Final.jar:7.0.2.Final]

         at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) [jbossweb-7.0.1.Final.jar:7.0.2.Final]

         at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:362) [jbossweb-7.0.1.Final.jar:7.0.2.Final]

         at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877) [jbossweb-7.0.1.Final.jar:7.0.2.Final]

         at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:667) [jbossweb-7.0.1.Final.jar:7.0.2.Final]

         at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:952) [jbossweb-7.0.1.Final.jar:7.0.2.Final]

         at java.lang.Thread.run(Thread.java:662) [:1.6.0_23]

Please look,If you have some time, Please show me the solution!

                                                                                                                                                                                                                                                                      Thank you

                                                                                                                 William