i get the same issue about "null\roles.properties", and i also change the build.xml, but it still is not working, whether i change build.xml wrong, please tell me how to fix the problem, thanks in advance.
<target name="start.human.task">
<mkdir dir="${install.home}/task-service/target"/>
<javac srcdir="${install.home}/task-service/src" destdir="${install.home}/task-service/target" classpathref="classpath.human.task">
<compilerarg value="-Xlint:unchecked"/>
</javac>
<copy todir="${install.home}/task-service/target">
<fileset dir="${install.home}/task-service/resources"/>
</copy>
<java classname="org.jbpm.DemoTaskService" fork="true">
<classpath>
<pathelement path="${install.home}/task-service/target"/>
<path refid="classpath.human.task" />
</classpath>
</java>
<jvmarg value="jbpm.user.group.mapping=${jboss.home}" />
<sysproperty key="jbpm.user.group.mapping" value="${jboss.home}"/>
</target>