JBoss tools 3 GA @OneToOne problem

[alejo.net]

I have a @OneToOne mapping working perfectly with jboss tools 2.1.1 and jboss as 4.2.2 and seam 2.0.0,  when I try to deploy this app to the same server, with the same seam runtime and jboss tools 3.0.0 GA the console shows me the following error
java.lang.NullPointerException…
at org.hibernate.cfg.OneToOneSecondPass.doSecondPass…
...
...

someone else has faced this kind of error?
thanks in advance

[max.max.andersen.jboss.com]

Can't see how jboss tools should affect your one-to-one association if you did not change the code nor the server/entitymanager version it should all be the same ?