Nope, the doors on the wall in an enclosed space system didn't work lol. I had both Gohere and Traveler script errors, and that was because the sim was being pushed to route to the doors to travel but they looped going back and forth through the doors. I couldn't be bothered to zip up the errors to upload them as I didn't want to bother you all with them and drag this thread out. I could clearly see what the problem was. I decided to give up the doors and go with the EA subways in the basements. I actually built some nice little buildings on top of them that I'm happy with so they don't look so unsightly
Thank you everyone who commented on this thread and helped me, I learnt a lot about the subway/routing system in this game. The EA subways work and I can't ignore that fact lol. Sometimes you really can't beat City Hall (I mean EA!) lol