Hi. I have installed Crysis 3 yesterday and want to play the singleplayer, but after ( in the 1st misson) correctly hacking the first door nothing happens, ...the door is allready closed ... I tried everything! PC/Campagne/Game restart... I need help !!!

my system:
Win 7 x64
i5-2500k 3.3GHz
8GB RAM
Geforce GTX 570