For the map making, you place the terrain and height mask in your Terrains folder which can be found in Feralheart>Media ^^ You then go into map maker and type in the names of the height map and terrain mask in the boxes.
As for the preset, if it shows up black and yellow, there's something wrong in the coding. If you send me the material file for your preset and tell me the names of your preset image files I can fix that for you. :3