SAP Press Sneak Preview errors with EJB

I am using the WAS Sneak Preview that came with the SAP PRESS Programming with Java and I have been trying to create a test entity bean which I create from a JSP. I have basically made it mirror with one of the examples in the book albeit changing some of the names, but I seem to not be able to do it. This is the exception I am getting.
com.sap.engine.services.ejb.exceptions.BaseEJBException: Transaction system failure in method com.sap.demo.TestLocalHomeImpl0.create().
So I tried changing the "container transaction" to Not supported, but that only got me:
com.sap.engine.services.ejb.exceptions.BaseEJBException: Exception in method com.sap.demo.TestLocalHomeImpl0.create().
Before I go posting all my code, has anyone else run into a similiar error, or are there certain things to chase down first in order to find the culprit?
HELP
-Tim

Maybe my response to similar topic would be helpful:
Re: Error in the Tutorial Car Rental application
Regards,
Marcin Zduniak

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