I started a PCB design in the freeware version of Eagle, now I have the full version, but it won't let me route tracks to the extra route layers (i.e: only top and bottom). Starting a new design in the paid version gives 5 extra routing layers.
Any ideas how to enable these layers on designs that were started in the freeware version?
Any help is appreciated
Tom
Best Answer
As Dave posted in his answer (+1), you need to enable the layers in the DRC. Here's an example:
And from the EAGLE help file (which is an excellent resource by the way):