Same case here. Win7x64+Opera for many years.
Start Windows in safe mode with networking and let Opera update. It has just worked for me.
I've had a pair of crashes of this kind lately.
Good luck.

It remembers me when in speeddials you have a bundle of links packed into one folder.
If you happen to do right button and accidentally select 'Open all in new tabs', it will trigger all the links as you cant't but stare the fireworks.