OMG
Must have been a missclick.
I would never have found it.
I was much to focused on the two lanes, because that was the "new part".
Stupid me.
Thank you very much for your quick response!

Hello there,

I have a problem with my train network.
A train doesnt drive to the next station, it says it can not find the way.
But the way is free. I can drive the way by hand.

I usually organize my trains in a single lane grid, which I expand while my base grows.
In my center grid there is a lot ...