The Mac version of the CoCGMS is a runtime build of the software using FileMaker Pro Advanced version 15. FileMaker offers an feature that lets developers wrap a FileMaker database within a dedicated runtime framework that can only run the database it was compiled to support. This is perfect for databases like the CoCGMS allowing it to break out of the lab and into the world.
To use the Mac version of the system, simply download the below archive and unzip to a folder of your choosing. Run CoCGMSv2 and that's it. No installation. Just unzip and run. You can keep multiple copies of the application in different folders but the CoCGMS is designed to hold separate content in dedicated packages so you normally just need one installation.
The CoCGMS vs is happy on all contemporary Mac OS releases.