Thanks! That fixed it. I'm going to spend a couple of days playing with KiCad then send off a test board. I'm very comfortable with EasyEDA, but I want to make sure I can create a single board through production before I go wild with designs - and there'll be a bunch.

I've used EasyEDA for years to develop my retro boards, but I'm not a fan of the new pro version - the library system is a mess. So I've decided to bite the bullet and learn to use KiCad properly. I downloaded the MECB 22V10 template from GitHub, but when I use it, KiCad complains that the Din41612 ...