I am making a 6 layer board. I cannot seem to get the autorouter to route layers 3 and 14. Layers Top, Bottom, 2 and 15 all route fine. I have set the routing direction for all layers to any direction, and costs to 0 for top and bottom, and 1 for layers 2, 3, 14, and 15. Layers are set up as (1+2*3+14*15+16). Any other ideas?
