very nice vegetation with the undergrowth, except the wide tree that one's hitting at the wrong place :P I had maybe the same problem in one of my convertions, the point symbol for marsh appeared additionally at (it seemed) random places in the forest...
Found that there are odd forest types on some small areas and that open stony areas with terrain hight randomness has generated wrong triangless from the area to the edge of the map - mainly under the terrain surface :( - try to fix them in the next conversion :)