In the map file I added (in a random location, but in the railway section) a new line.
So, in the Russia game I added this rail line; (shown in the map.ini file like this)
Borisov-Bobruisk-Bylchov
34630|2996|0|34831|3046|0|35130|3145|0|
{/AGE_Lanes}
{AGE_Lanes}
1
Borisov is one of the towns on the existing Minsk to Kiew (Kiev?) line.
If I loaded the game with the debug mode active I get the following message:
TRegionCmns.AgeLanesUpdates Exception caught: Indice de liste hors limites (-1) Step;
But, really strange, the original Minsk-Borisov-Mozyr-Kiew line has now vanished, and my new one isn't showing either. (Removing my line from the map file restores the Minsk-Kiew line though).
I tried a few other lines (all where I have built a railway within the game, but the province has no rails allocated in the map.ini file), but they never appear.
Would it require a new game, or a province that only has roads, before new lines added in the map file would appear on the map?
Should you start the xy point just outside of the province structure or is it fine to choose coordinates inside the town/fort etc as a start point?
Can anyone offer any guidance and advice on what I need to do and what I'm doing wrong?

Thanks!