Hello,
I have the same issue with my Map. When i open the map in game it stay gray also the treasure maps.
Now i have make a folder with ServerGrid where are the JPG. in de map. Server restart and still not working.
Quote: The full map need to be forwarded in the "MapImageURL": of your ServerGrid.json or it will not show. What do i need to setup in the URL the local file place like c:\ServerGrid doest not work than the server dont start.