After resuming from a save on the Class20 journey 6E10, the brakes immediately went into emergency application with no warning. I had the AWS enabled, but not passed over an AWS ramp. There was also no AWS warning or even sound of the brakes being dumped in emergency application, just the train coming to a sudden halt and none of the controls being responsive. I couldn’t make it start again without isolating the AWS, which then allows me to apply power and get moving again.