The map in stones/mapdata/Stones will need to be loaded in World Creator and exported before ServX will run with the default configuration.
Open CODEX and go to the World Creator. This will open with a new world. Go to File -> Open. Navigate to stones\mapdata\Stones and select this folder. Do not navigate down into raw. Once the Stones map has been loaded, go to File -> Export and wait for the export to finish. You should now see a bin folder under stones\mapdata\Stones.