These files have been created in version 6 of KiCAD.
Some of the 3d models need to be downloaded form the following places and put into the CM4IO.3shapes directory some models are approximations.
https://datasheets.raspberrypi.org/cm4/CM4-step.zip
https://www.amphenol-icc.com/pci-express-1001878311200tlf.html
https://www.te.com/global-en/product-171826-4.html
https://www.molex.com/molex/products/part-detail/memory_card_socket/5033981892
The models provided in the 3dmodels directory are from various manufacturers including Diodes, Hirose, MTCONN,Toby, TRXCOM. Terms and conditions for the use of the models remain with the original manufacture.