@operamilleson Updating an existing Opera installation through Google Play Store makes Opera start crashing, clearing the app data or un-installing and installing is the only way I can make it work again.

After clearing the app data Opera starts working again. I tried logging in to sync on the phone and not logging in on the tablet. Sync worked on the phone at this point with no problems. However, it makes no difference after Opera is updated if sync was enabled or not - Opera starts crashing on both devices.

This is a screenshot of the error causing Opera to crash. Looks like some file goes missing after every update.

I have Sony Xperia Z3 Compact and Sony Xperia Z2 Tablet and the problem occurs on both.

Hello,
I've been having this problem every time after Opera updates through the Play Store for the last two months, roughly at the time synchronization was introduced:
No pages load in any tab when I enter a URL, touch a speed dial or a bookmark, and after a few seconds I get the message box saying "(site) is not responding, do you want to close the tab?". When I choose "Close", Opera crashes. The only solution I found so far is clearing the application data and losing all my settings, passwords, etc. I experience this on both my phone and tablet, running Lollipop, but it also happened under Kitkat. I checked the comments in the Play Store and lots of people complain about the same. I can provide you with more information if you need it, so please investigate this, as I am losing my patience.