The game crashes every time if you close the schedule window with only one stop added.
If it's any help, here's an image.
http://imgur.com/hhAyBnF (http://imgur.com/hhAyBnF)
Thank you very much for the report: I think that I have fixed this - do you care to re-test?
Also, welcome to the forum!
Seems to be fixed now.
I'll probably only be here occasionally but I'll definitely report anything I find.
Excellent - thank you very much.