Two problems. First one is that as soon as I enter the main fight room, the synths immediately attack and I never get to talk to Kellog I am forced to kill him. The symbol indicating I need to talk to him never goes away, it remains above his body. Problem number 2.....when I use his terminal to open the security doors, the door that leads out of the area to get to the elevator will not open. I am stuck and can't leave. Can anyone help?