Hmm, so are you using JPA or EJB? because if it is JPA you need to use jpaconfiguration. Just check that you have the dependencies as seen here:
http://fisheye.codehaus.org/browse/mojo/trunk/mojo/hibernate3/hibernate3-maven-plugin/src/it/jpa-configuration-hsql/pom.xml?r=6864 Regards Johann Reyes
