I have a licensed version of Eagle 5.x. A board is setup for 2 layers in the DRC using "(1*16)" where the graphics,
numbers, copper and isolation all show 2 layers. The board is laid out with 2 layers. Typing "cha lay" or the middle
mouse button shows the usual list plus unwanted layers 2-15. To add insult to injury, a co-worker has an unlicensed
version and it lists only layers 1 and 16 on both his computer and if I copy his whole project over to mine. Is there
any way to make the unwanted layers go away? It would speed up hand routing sensitive nets.