Games Ui gets really messed up for me. Not sure why theres 2 full screen buttons and both don't work. Game is a bit confusing too. I'm sorry i couldn't figure this one out. One of my trains got derailed at the start too 
Sorry to hear. I still have troubles sizing the screen and couldn't get it work.
The derailing is the physics engine to trigger the switch and point counter. It is only enabled a few seconds before triggering. Mostlikely the screen resolution messed up everything.