Hibernate 4 ant problem after upgrade to JBoss 7.1

[mreinhardt]

After upgrading my app to JBoss 7.1, my ant task doesn't work for recreating my datasource:

[hibernatetool] Executing Hibernate Tool with a Hibernate Annotation/EJB3 Configuration

[hibernatetool] 1. task: hbm2ddl (Generates database schema)

[hibernatetool] An exception occurred while running exporter #2:hbm2ddl (Generates database schema)

[hibernatetool] To get the full stack trace run ant with -verbose

[hibernatetool] Problems in creating a AnnotationConfiguration. Have you remembered to add it to the classpath ?

Here's my build snippet:

<target name="createSchema" description="Creates tablecreation- and tabledropscript" depends="init, createConfig, build-domain.jar">
        <path id="toolslib">

            <fileset dir="../compile-libs">
                <include name="hibernate/hibernate-envers-*.jar" />
                <include name="hibernate/hibernate-core-*.jar" />
                <include name="hibernate/hibernate-tools.jar" />
                <include name="hibernate/hibernate-jpa-*.jar" />
                <include name="hibernate/freemarker.jar" />
                <include name="xdoclet/commons-collections-3.2.jar" />
                <include name="xdoclet/commons-logging.jar" />
                <include name="jaxb/jaxb-impl.jar" />
            </fileset>

            <pathelement location="${component.domain.dir.dd}" />
            <pathelement location="${component.domain.dir.classes}" />

            <fileset dir="../lib">
                <include name="javaee/jee-5/javaee.jar" />
                <include name="dom4j.jar" />
                <include name="slf4j-api-*.jar" />
                <include name="slf4j-log4j12-*.jar" />
                <include name="trias/Questionnaire-*.jar" />
                <include name="trias/Trias-*.jar" />
                <include name="trias/Processing-*.jar" />
                <include name="trias/RAISExecutionFramework-*.jar" />
                <include name="trias/HLRLifeProcessing-*.jar" />
                <include name="trias/bpDataTypes-*.jar" />
                <include name="trias/i18ntext-*.jar" />
            </fileset>
        </path>

        <apply executable="test" type="file" ignoremissing="false">
            <arg value="-e"/>
            <srcfile/>
            <path refid="toolslib"/>
        </apply>

        <property name="myclasspath" refid="toolslib"/>
                        <!-- Emit the property to the ant console -->
        <echo message="Classpath = ${myclasspath}"/>

        <available 
              property="hibernatetoolok" 
              classname="org.hibernate.tool.ant.EnversHibernateToolTask" 
              classpathref="toolslib" />

        <taskdef name="hibernatetool" classname="org.hibernate.tool.ant.EnversHibernateToolTask" classpathref="toolslib"/>

        <mkdir dir="../database/generated" />

        <property name="prefix" value="" />

        <echo message="used config file = ${project.dir.conf}/hibernate/${prefix}hibernate.cfg.xml"/>
        <hibernatetool destdir="../database/generated">
            <classpath>
                <path refid="toolslib"/>
            </classpath>    
            <annotationconfiguration configurationfile="${project.dir.conf}/hibernate/${prefix}hibernate.cfg.xml" />
            <hbm2ddl export="false" update="false" drop="false" create="true" delimiter=";" format="true" outputfilename="${prefix}myapp-create.ddl.sql" />
            <hbm2ddl export="false" update="false" drop="true" create="false" delimiter=";" format="true" outputfilename="${prefix}myapp-drop.ddl.sql" />
        </hibernatetool>
    </target>

Any ideas what's wrong with my build.xml?