I was getting this exact same error. When I got to the character selection screen I changed my graphics option from windowed fullscreen to fullscreen and it worked. I am now in the game. From within the game I changed it back to windowed fullscreen and it seems to be working fine so far…hope this helps you guys!
UPDATE: two hours later it kicked me out and my trick didn’t work again… So I guess I was just deluding myself. 
(edited by NBK.7468)