Hello xgipper,

Everyone's '2pth' can help to build up a picture of what's going wrong.

I'm not sure what you mean by 'I have mine sort of working again after deleting the opera folder in prefs and restarting it'.

Which 'prefs' are you talking about?

Cheers

I been using various Mac computers, for the last 15 years, and never once have I ever suffered from any kind of problem or virus, etc. Version: 37.0.2178.54 - Opera is up to date
Update stream: Stable
System: Mac OS X 10.8.5 64-bit

I started to experience the same problem, yesterday, on my Mac. I get a quick flash of a website, then a blank screen. Strangely enough, OANDA, the currency Converter website, loads up, no problem, and still works. https://www.oanda.com/currency/converter/

The Ad Blocker keeps popping up, on websites that it never used to. Thankfully, Google and Gmail are not unaffected, but I've had to use Chrome, to come on here, to register the problem.

I've also started getting a plague of unwanted advertisement websites repeatedly popping up, mainly from those extremely annoying MacKeeper people, who don't seem to understand the meaning of 'Thanks, but NO THANKS!', and think that I should handover control of my computer to their software, carte blanche, for an ongoing monthly fee. I am still getting their Backup programme starting automatically, and invading my computer. I have to use 'Force Quit', in order to stop it dragging down my CPU.

I like Opera, and really need to get it back working, again. Hopefully, some 'knowing person', will figure out it, and post a solution that doesn't loose all bookmarks. Cheers everyone.