Hi,
I just released a new JBioWH JAR file with the last compiled snapshot.
http://jbiowh.googlecode.com/files/jbiowh-4.0.0-SNAPSHOT.jar
In this new version the dependencies in the POM file were updated to their last versions. Also, the persistence.xml file was modified to be used in Composite Persistence Units. A tutorial to integrate the JBioWH JPA model and relational schema to your java project is available too.
Regards,
Roberto