I am a first time user of EagleCAD attempting to build a PCB.I have built custom symbols and parts for my design. When I add them to the schematic, they do not show up on the PCB. I have tried using library parts and I get the same result - no automatic pre-population of the PCB. If I manually place the parts on the PCB and run ERC, and wire a pin to a part, I get errors like "Different connections on HDR1 pin 1 and pad P$1 (N$1 /S$1)"
What am I missing?
How do I make the ratsnest visible to help me with layout and manual routing?