I am running Chrome on Mac Version 55.0.2883.59 beta (64-bit) My OS version os macOS Sierra 10.12.1 I've been getting this error message on my old computer for ages now. I suspected it something to do with my preferences file, like the prompts. So when I got a new Mac computer, I didn't import my old preferences. I didn't sign into Chrome Sync on the browser. Instead, all I did was to export my old bookmarks into an HTML file, and re-import that into my new computer. At first, everything was fine, but after I restarted my computer, the error message reappeared.