Client Initiated Form SSO causes tmm restart

Hi, I'm trying to to build up a lab box that replicates are current Forefront UAG implementation as its EOL. After getting my head round the basics I progressed to try and get some of the SSO working with APM. I have tried standard form SSO and that work OK as in it intercepts the form variables and replaces them with the correct credentials, but without auto the form submission etc. But now I'm trying with client initiated as some of the application will need extra customisation to get the seamless login experience they currently have, and as soon as you login and it matches URI for the login form on the web application I get Device HA state transitioned from 1 to 2 and on the console I get Re-starting tmm. The web application work perfectly without the client initiated form SSO. I'm on the 11.6VE HF5, I'm guessing I've done something stupid to cause this as a F5 newbie but I can't see it at the moment as the config is pretty basic. So to recap in the Access Policy log I get: SSOv2 Request "GET /webapps/login/", config /Common/BB_FCI SSOv2 Request match, config /Common/BB_FCI form login apdm Device HA state transitioned from 1 to 2 apd Device HA state transitioned from 1 to 2 These services continue to flip flop a few times and then you get the restart. System log Started writing core file: /var/core/tmm.0.bld5.0.429.core.gz

I've run the config through the iHealth and looks through the logs for anything obvious, but nothing stands out as yet. So any advice would greatly be received on how to troubleshoot this further. Thanks, Ged