Seam: seam-gen reverse engineering fails on IBM VM

In a newly created project, launching "seam generate" fails with ExporterException.

[user01@rhel01-seamhell seam]$ ./seam generate
SEAM_HOME: /home/user01/jharting/jboss-eap-5.0/seam
Using seam-gen sources from: /home/user01/jharting/jboss-eap-5.0/seam/seam-gen
Buildfile: /home/user01/jharting/jboss-eap-5.0/seam/seam-gen/build.xml

init:

init-properties:
[echo] /home/user01/jharting/jboss-eap-5.0/jboss-as

validate-workspace:

validate-project:

init-generate:

generate-model:
[echo] Reverse engineering database using JDBC driver /mnt/jqa/home/jharting/mysql-connector-java-5.1.6-bin.jar
[echo] project=/home/user01/jharting/workspace/seamIMBTest
[echo] model=com.example
[hibernate] Executing Hibernate Tool with a JDBC Configuration (for reverse engineering)
[hibernate] 1. task: hbm2java (Generates a set of .java files)
[hibernate] log4j:WARN No appenders could be found for logger (org.hibernate.cfg.Environment).
[hibernate] log4j:WARN Please initialize the log4j system properly.
[hibernate] An exception occurred while running exporter #2:hbm2java (Generates a set of .java files)
[hibernate] To get the full stack trace run ant with -verbose
[hibernate] org.hibernate.tool.hbm2x.ExporterException: Error while processing Entity: com.example.Vehicle with template pojo/Pojo.ftl
[hibernate] freemarker.core.InvalidReferenceException: Expression property.value.identifierGeneratorStrategy is undefined on line 5, column 132 in pojo/GetPropertyAnnotation.ftl.

BUILD FAILED
/home/user01/jharting/jboss-eap-5.0/seam/seam-gen/build.xml:1375: org.hibernate.tool.hbm2x.ExporterException: Error while processing Entity: com.example.Vehicle with template pojo/Pojo.ftl

Total time: 4 seconds