I haven't played the game in a while but I have a new Macbook Pro and my established game now just quits suddenly shortly after starting up. I have time to zoom in on a town, place some bus stops, establish a new line and put some stage coaches on the line then it just goes away. There is no crash message or anything that would indicate a problem, it just closes.

I thought I would post here to see if anyone has any ideas before I start dragging out the debugging tools.