The newest packaging is 1.0.1.GA and you can download it from https://repository.jboss.org/nexus/content/groups/public/org/gatein/sso/sso-packaging/ . It's possible that this version will work for you.
But GateIn and EPP is officialy supported and tested only with OpenSSO 8 update 1. I am not sure if it will work with OpenAM without doing some additional steps, but maybe yes.
I'm actually trying GateIn for my firm and I don't manage to integrate OpenAM and GateIn.
I follow all the steps in the GateInReference Guide but I've a problem.
The scenarii of the problem is :
1) Go to localhost:8080/portal
2) Click sur Administrator
3) I'm redirected to : openam.vauban.com:2080/openam_s952/UI/Login?realm=gatein&goto=http://localhost:8080/portal/private/classic
4) I filled in the form with root / gtn
5) I'm redirected to localhost:8080/portal/private/classic and the page is blank and the main fact is : The system seems to redirect me to this page infinitely..
Does Someone know an issue for this infinite loop ?
For information, I configured my OpenAM :
to encode the cookies, and use c66encode.