Have updated to newest version of Illustrator and now get this warning on launch. Program does open but with no preset preferences available.
Tried uninstalling and reinstalling but there is no improvement.
Please get in touch with us at any of the other support channels – https://helpx.adobe.com/support.html . Since this is not a generic issue that we can reproduce at our end, we will need someone to look into your machine to figure out what is going on here.
Ashutosh Chaturvedi | Sr. Quality Engineering Manager – Illustrator
Having the same issue. Uninstalling and installing again won't solve the problem...
Mac OS X 10.11.6
Same problem. El Capitan 10.11.6
Not able to use the old version instead to keep on working somehow.
Thomas Jung commented
I have the same problem! why is any update such a pain? Sierra 10.12.6.
Thomas Hageleit commented
Same here on macOS 10.12.6 with Illustrator 2018.