I'm having a similar problem. Last night, out of the blue, my Opera browser started crashing. Every time I tried to open it, it would instantly crash. I've uninstalled and reinstalled three times, but it still happens every time I tried to open it. I've never had this problem before, with any version of Opera. I'm actually starting to wonder if it has something to do with the big hacking news that has affected Google services, considering Opera is essentially a clone of Chrome (not hating, just saying).