I am not sure if we can even load a different map right now. I opened the dev map and edited it a little bit. After that I saved it to a new file and tried to press "Save and Play World". The screen went to grey and nothing happened. I was able to open the menu. When pressing Reload current map it just loaded the original demo map.
So I am not sure if you can load your own map or if the map thats in the mod folder is the map that is actually loaded on startup of the game.
my screen is grey too... i just change 01 to 02 at the map name... the "switch map" function is locked, when the EA is done, i think this function is open!
the subject seems to be stopped, can not any map be edited anymore? Did someone discover how to model land?
It would be a great help some manual to start modeling our maps
For the map modding, you will have to wait until some feature as AI road driving and helper field work for exemple get near to final version, as they are part of the finished map ...