I created a schematic, assigned the footprints to schematic symbols and then created the Netlist. In Pcbnew I then load the netlist and it looks like most things worked except for my Teensy 4.0 component. For this component I get the following: “Error: Symbol U1 pad ~ not found in footprint teensy:Teensy40”
I’m guessing the problem is that the shematic symbol for the teensy shows many more pins than the footprint (I think because the teensy board has pads on its bottom side). I didn’t make the footprint or symbol, I downloaded them from pjrc.com, who makes and sells the boards.