In the footprint editor, you can only have one active footprint at a time. You have to save the footprint into a library before you start editing another footprint.
The footprint wizards are python scripts that run inside the footprint editor. (I.e, you could also copy / modify those scripts, or even write new ones). When such a wizard is finished, it puts the result into the footprint editor, and from there you can fine tune with more modifications, and then you have to save the footprint into a library, just as with any other footprint in the footprint editor.
That’s natural because the purpose of the courtyard is to define area for a component where other components shouldn’t be. The wizard created the courtyards. If my guess was correct, you will have a component on the qfn footprint but not on the soic. You can just remove the courtyard and also the fab layer outline and/or silkscreen from the soic footprint because you use the footprint for other purpose than for a component.
Or, you can just ignore the error, or exclude it. This is very simple board, you just have to know what you need there.
Change your selection filter to “Tracks” only (uncheck everything else), draw a selection rectangle over the entire board. That should get all the tracks selected. Then hit “e” and change the track width in the dialog box.
Thank you for all of yours comments and help. I finally got it to work without an error when I run DRC. it is a very simple board but took me a while. I learned a lot from you guys. I used Eagle years back, so the first time I use Kicad.
