Which version of KiCad did you use to create this? I wasn't able to open the file, but I suspect I'm using a much older version.

I'm using 8.0.2 (current stable is 8.0.3) , and I did see a dialog about updating some stuff in the library when opening the files for the first time. I did not see anything missing and I think it would be quite trivial to update the files to the current version.

Just noticed that the sch file in my PR have ERC errors related to :

A. me forgetting to add no connect flags on pin 9 of both 595
B. getting "Pins of type Power output and Power Output are connected", specifically pin 27 (5V) on the nano and #FLG0101 but I suspect this is safe to ignore since it's present in the original 'TommyPROM32.sch' file from the repo.

Do you want me to submit a new PR with error A fixed ?

Just confirming that the TP32-595 PCB version works as intended with the files in this PR