Hi, I've just started using TSW with the Tees Valley expansion. In the class 37 training there is sound of an engine running and it tells me to turn the master key to start the engine. I am unable to do this , and it doesn't make any sense anyway. I tried one of the scenarios with the same problem, so I cannot use class 37 at all. What am I doing wrong, or is this a bug and when will it be fixed? Thanks.