The image worlds/blackland/pics/granit4.png was somehow faulty, copying over it from another world fixed the issue.
I started a more general discussion on the resource markers in the forum: http://wl.widelands.org/forum/topic/1151/
The image worlds/ blackland/ pics/granit4. png was somehow faulty, copying over it from another world fixed the issue.
I started a more general discussion on the resource markers in the forum: http:// wl.widelands. org/forum/ topic/1151/