I am a subscriber to CC and have just installed Illustrator 2017 which in process uninstalled the 2015 version. Unfortunately, I use a plug-in for another programme (Cutting Master 3) which currently doesn't work on anything later than 2015. I need to reinstall the 2015 version but cannot find out how to do it. I did it before, as I updated to 2015 before it was ready and reinstalled 2014 with no problem, but right now, there are no 'previous versions' available to me.
I cannot use Cutting Master 3 now without this plug-in.
Can anyone advise how I can revert to 2015. I'm on an iMAC on Sierra.
In the future, when you install new versions, you click update and then, on the next screen, twirl down the "Advanced Options" and untick the box that removes old versions. Then you can keep things working while you try the new version out.
To install older versions, see this: http://blogs.adobe.com/adobecare/2015/06/16/how-to-find-and-install-previous-version-of-ad obe-apps-in-cc-2015/
Thanks..that's exactly what I was looking for, I knew I'd managed to find it before...
I can stop googling..