Sorry about the duplicity of this post, when I wrote this first I couldn't see it publicated, so I thank I did something wrong and I wrote it again.
I'm using the Steam version, I'm not using any mod or patch. My OS is Windows 7.
The game does not answer when the first loading should appear.
Before this, when I try to save a game I can't, I click on the save button and it does not save the game.
My install path is C:/Program Files/Steam
Thank you for your answers.