T:ANE Mojave Sub: how do you get the crossings to work?

I know this may be noob question as I am fairly new to the Trainz series, but for some reason the crossings on the Mojave Subdivision route for T:ANE aren't working for me. No lights, no bells, no gates...nothing. For those of you that have had this problem with this route, how did you go about fixing it?

The creator didn't setup the crossings completely, as the slave was left untouched. I was wondering the same thing until I just loaded one of the sessions and took at look at a crossing, that's how I found out...