Mid-2011 iMac Upgrade
Apple Logic Pro X 10.5 requires MacOS 10.14 Mojave, and at the time I was collaborating on some projects created in Logic 10.5. Older iMacs, like the Mid-2011 iMac I have, can’t be upgraded to MacOS Mojave because the stock GPU it has doesn’t support Metal. The last, officially supported OS for the 2011 iMac is 10.13 High Sierra.