Edit: After half day, my wife’s Mac started having the same problem. I have then applied the solution that I found in the Apple
The Console Business Is Not For Apple Say's Apple CEO Tim Cook –
Apple CEO Tim Cook took to the stage at the All Things D D10 Conference yesterday evening and when questioned about Apple & gaming Cook stated directly that Apple was “not interested in being in the console business.” The conference was to discuss various aspects of Apple and its direction
Gaming has kind of evolved a bit. More people play on portable devices. Where we might go in the future, we’ll see. Customers love games. I’m not interested in being in the console business in what is thought of as traditional gaming. But Apple is a big player today and things in the future will only make that bigger.