but my test app is quite old so it failed to find some HibValidator class.
To get my app running I had to bundle org.hibernate:hibernate-validator-legacy:4.0.2.GA with my app. It was provided on AS6, I think, but it's not available on AS7, apparently.
This might fix your problem.
So you managed to get it running?
I'm testing my stuff with jboss-seam-jpa.war example.
Let me try and bundle this legacy validator jar.