I had the beta 2.0 5c in before updating, never had any problems before. I am now trying all sorts of hood breaking things to try isolate the problem (I pulled ACR out for a bit, and it looked fixed at first, but it isn't, I ended up with a teen that invalid constants every time she is supposed to get her fresh token).
Thanks for trying to help :) If I find the problem ever I'll post it for the benefit of others.