So it does. The stable version that would run on my old Vista box didn't so I just jumped in with Beta on all my machines and never looked back.

Today's update kills Opera Beta on my Mac. OS X 10.9.5. I was using Opera, got the notice to restart after it downloaded an update. It went down, the icon bounces in the tray a couple times but fails to start. Redownloaded from the website, web installer failed. Downloaded the offline installer, still fails to start. Pulled down Opera Developer, it doesn't even bounce, just an instant failure to start of any kind. Stable is still working so I'll drop back to that for now.

Same issue appears to be affecting me for Beta and Dev, OS X 10.9.5. Updated Beta, won't start after closing it. Downloaded Developer, it also fails to start. Back to stable for the time being as I don't require the VPN.