I have played assassin's creed revelations for three days. Yesterday, while I was playing, the screen of "cannot read 0x00000018" appeared and I clicked "cancel", my game ended suddenly. It had appeared a few times before but it worked while launching again. But now when I click "play" in the game launcher, the screen of same message(cannot read 0x00000018) appears again and again and I cannot access to the game. I tried so many ways to fix it but it is still not working, can you guys help??