Every time I test my payload map, the train (it's not the bomb cart, its the well GP35) gets stuck on the control point, and wont move. Nothing physical is obstructing it, either.
Sometimes you just need to make the path_track entities higher off the ground than you'd expect. And if your control point is over the normal entity for that, you'll need to raise the path of the train up and then back down again as it goes over the cp. Keep experimenting with the heights and building just the bsp in fast mode until it's right.
i had this problem and still once in a while the cart would get stuck. Also the sound of the cart would get "stuck" in different places where the cart has been.
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