UPDATE: This has finally been updated to work with the latest version of the game. Unfortunately, the nature of the last couple big updates have totally changed the way separate parts interact with each other. Because of this, I will not be updating this vehicle any further with new equipment, I will do my best to make sure it can still work though. I will start designing and building a new rocket to work within the new functionality but it's too much work to completely change this one and starting from scratch will be easier.
For this update, I have reconfigured a few systems to work but a lot of stuff won't work anymore E.G. dials and certain controls. TO LAUNCH you now must get the rail car to an open area, engage the trailer brakes on the side of the trailer and then lift the rocket. Once it it fully upright, switch off the piston connectors, switch off the slider brakes and then go around the other side and climb the ladder. Once at the top, open the hatch and climb inside, turn around and hit the ladder button so it drops. Then climb in the main seat and put the thrust to .40, then hit the compressor switch. After a short build up it will launch and you are in control. As mentioned before, none of the gauges now work but the lights and Pod parachute do. When you are ready to detach, hit the Main Connector button and the parachute button to land safely.

A quick change of some wiring.

Uploaded Rocket Rail Transporter w/Space Y Orbiter to the Workshop.