Unable to run translator example with settings for cluster

When I try to go to http://localhost:8080/weld-translator after deploying the translator example to JBossAS 6.0.0.M1, exceptions are thrown both at server.log and web browser. The exception are attached as separated files.

Steps to reproduce:
1) add <distributable/> tag to web.xml as it's first tag (at WELD/examples/jsf/translator/war/src/main/webapp/WEB-INF/web.xml)
2) add this content to jboss.xml file at WELD/examples/jsf/translator/ejb/src/main/resources/META-INF/jboss.xml :

<?xml version="1.0" encoding="UTF-8"?>
<jboss xmlns="http://www.jboss.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.jboss.com/xml/ns/javaee jboss_5_0.xsd"
version="5.0">
<enterprise-beans>
<session>
<!-- stateless bean -->
<ejb-name>SentenceTranslator</ejb-name>
<clustered>true</clustered>
</session>
<session>
<!-- stateful bean -->
<ejb-name>TranslatorControllerBean</ejb-name>
<clustered>true</clustered>
</session>
</enterprise-beans>
</jboss>

3) download jboss-6.0.0.M1 (for example from http://reports.qa.atl.jboss.com/release_tests/binaries/JBossAS/jboss-6.0.0.M1.zip)
4) unzip it twice to different folders
5) now you have to update both the JBoss AS instances with current version of WELD core (from WELD/core)
6) run the first instance from its bin directory: ./run.sh -c all -g DocsPartition -u 239.255.101.101 -b localhost -Djboss.messaging.ServerPeerID=1 -Djboss.service.binding.set=ports-default
7) run the second instance from its bin directory: ./run.sh -c all -g DocsPartition -u 239.255.101.101 -b localhost -Djboss.messaging.ServerPeerID=2 -Djboss.service.binding.set=ports-01

8) clean and build the application: run mvn clean package in examples/jsf/translator
9) copy resulting ear file (weld-numberguess.war) from translator/ear/target/ directory to serve/all/farm directory at first jbossAS instance
10) go to http://localhost:8080/weld-translator
11) now you can see both exception in server.log and web browser

When i try to set <clustered>false</clustered> in jboss.xml, the application shows properly when I go to web browser. But then the application is not working in cluster (EJBs' state is not replicated between nodes of cluster).