I have also encountered this error as reported and am running 1.9.1.

Thank you.

I found something similar. Valka is not 'discoverable' even after driving all around it. The map font does not turn to yellow, so jobs cannot be taken from there.

Yes, but it does require the Going East DLC and has to load last. So, you load order should be ProMods, Poland Rebuilding and then Rusmap (put "zzzz_" in front of the filenames). It connects to the roads west of Warsaw. Yes, this solution works for me, but I read elsewhere that the crash ...

Sorry, I don't know how to get coordinates. There are only two depots that are linked together in Antwerp. I grabbed a picture but can't upload it here.

There are some invisible walls in and between the two interconnected depots in Antwerp.

I disabled all mods except ProMods, but the Rusmap crashes ETS2 between Mozir and Gomel.

I have the same problem, and it goes away after disabling Promod 1.1. Another problem with Promod (even before DLC) is that in the freight job view I cannot click on the cities in the far north and east of Scandinavia. The map simply will not scroll up that far. After installing DLC, a similar thing...