I have Opera 46 on MacOS Sierra 10.12.1
I use Opera everyday on both the Personal and Work users (daily) on my laptop. But for some odd reason, today, it just wouldn't start up.
I've probably restarted my Mac for the 5th time now, and Opera still won't open. I've tried opening it from everywhere: My dock, the Applications folder, via Alfred, Spotlight, etc. and still no luck.
Here's what it looks like whenever I try to start it up (GIF of my screen recording):