So switching to get away from Sagepay to Secure Trading.
However the redirect back from their website and then trying to access the success page fails because it cannot get the session.
The problem is, the URL callback from Secure Trading seems to iframe the website, rather than redirect back. Thus losing the success page because it can’t pick the session back up.
Is there a way I can redirect back to the Onepage Success page using the getBaseUrl concept to break out of the damn frame.