how can i use the map from image feature?
i got these lines in my worldconfig.ini

  # Source png file for FromImage biome mode.
  ImageFile:map.png

where do i have to copy the image to? and how can i tell TC to use the image?

In WorldConfig.ini set
ModeBiome:FromImage

The image map.png goes into the same folder as the WorldConfig, therefore
./plugins/TerrainControl/worlds//map.png