My Path of Exile does not open ... HELP!!!!

hello, I am Brazilian and I'm not very good at English, but I'll try to explain what's goin...
My Path of Exile is not opening, I play it through STEAM, until yesterday (29) normal and everything was working perfect, but today it was updated automatically and the game no longer opens, I click "play" ai opens the screen "Loading" and after about 5 seconds the game closes alone.
please if someone could help me.