I was looking to upgrade my macbook to Catalina OS. I am aware that 32-bit Adobe programs will not work, but that 64-bit programs will. With that said, as the process started, I got a warning that my Adobe Illustrator CS-6 will no longer work with the upgrade. But Illustrator CS-6 is 64-bit so now I'm super confused. And I definitely don't want to lose Illustrator. Has anyone gone through the upgrade and been fine? [Link removed as per forum guidelilnes.]
Your other option is to use modern software from a competitor like Sketch, CorelDRAW, Affinity Designer or Inkscape.
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Nancy O'Shea, Adobe Product User & Community Professional Alt-Web Design & Publishing ~ Web : Print : Graphics : Media
Catalina changed LOTS of things and was designed to block all apps older than 2019. 64-bit is just the easiest and simplest to explain. If you want a new system, you will need to budget for all new apps. It's part of the Joy Of Mac.
It's important to keep your system, hardware and apps from the same "generation". If you try to mix old apps and new systems, or new apps and old systems, you may have terrible problems. (In this case, so terrible, they don't mix at all).