The filename is: subtropical_islands.xml But I tried also with a map I called mediterranean.xml which had the same problem. Edit: The Map is named "Subtropical Islands".

Oh sorry I thought it was community-maps not community mod. My guess would be that something with mods messes the order. Could also be the persist match settings.

@0adler what's the filename of your map? Sure you could upload the map here. It seems more related to the savegame, so i wonder if filename got mishandled somehow.

I didn't understand the question. I only see the difference between preinstalled and custom maps. The former work, but the user created don't. The strange ting was that there are no errors when playing the map and saving the game, but only if we load the gamesave the map is changed, but there seems to be no error that is reported. We even tried to host the game on both computers. 

There are no maps added by the community mod in version 0.27.2