What steps will reproduce the problem?
(1) Open Google Chrome Canary

What is the expected result?
Seeing my home page (just mail.google.com)

What happens instead?
The page starts to load (I see my email address and the progress bar start to fill), then I see the "Aw Snap" error

Please provide any additional information below. Attach a screenshot if possible.

Version: 54.0.2811.0

I've been using Chrome Canary and Chrome in parallel on my Mac for weeks without restarting. I had to restart for an unrelated problem, and after doing so, Canary won't bring up any page.

I tried uninstalling and re-installing Canary, but it made not difference.  I saw a message to log the defect before changing settings, so I'm doing so. But I will try disabling extensions,etc to get it working again.