it happen for a month now (after that big update) ,and everytime I click "Play" green button on that launcher pad,it just loading a bit then back to normal,nothing happen (no matter how many time I click to play,it still like that) ,so I cann't play game for a while now =.= (and I remember it do happen to other player too,but now I don't see much post about that so can't find solution for that)
in the launcher there is a hexagonal icon with a wrench just on the opposite side of the play button. if you click that, there are some options. choose number 4 - validate game assets - this should check all the files. likely you have a corrupt file, and this should fix it. hope this works for you.
I think it work ,but then the next time I launcher,this weird bug appear again (even before and after I apply your guide),after I click play on launcher,the launcher suddenly changed to facebook ??? (not fullscreen though)
