Since upgrading to 2019 I am having the same problem too when working in Illustrator.
My specs for my mac is as followed:
mac0S High Sierra
10.13.6
Mac Pro (Late 2013)
3.7 GHz Quad-Core Intel Xeon E5
12 GB 1866 MHz DDR3
AMD FirePro D300 2048
The Illustrator file is 4.4MB and there is just one PSD image and the rest is vector based. I am working then the warning box comes up with 'Can't finish Previewing'. I click Ok and my artboard turns grey.
I use the keyboard shortcuts to zoom in and out and my artboard is still grey. I go to the View menu and click on GPU Preview but nothing happens.
I quit out of Illustrator and restart it and open up the same file (which is the recovery file), Save As. The artwork opens on Preview on CPU but on one occasion it still had the Outline preview.
This has happened about four-five times since the update.
Since upgrading to 2019 I am having the same problem too when working in Illustrator.
My specs for my mac is as followed:
mac0S High Sierra
10.13.6
Mac Pro (Late 2013)
3.7 GHz Quad-Core Intel Xeon E5
12 GB 1866 MHz DDR3
AMD FirePro D300 2048
The Illustrator file is 4.4MB and there is just one PSD image and the rest is vector based. I am working then the warning box comes up with 'Can't finish Previewing'. I click Ok and my artboard turns grey.
I use the keyboard shortcuts to zoom in and out and my artboard is still grey. I go to the View menu and click on GPU Preview but nothing happens.
I quit out of Illustrator and restart it and open up the same file (which is the recovery file), Save As. The artwork opens on Preview on CPU but on one occasion it still had the Outline preview.
This has happened about four-five times since the update.