well... I've uninstalled long war, then XCOM EW, then Steam. Next step install all again. Before even applying the mod I've turned off my wifi connection, and when it was installing it asked if I wanted to restore an old back up. I said "no" and when installed long war, without being connected to internet, I've launched the game... And nothing happened, the mod doesn't work. The only options on game properties for checking for updates were: check when launching the game / when launching steam / or high priority search for updates... I can't turn off update checking... I'm new using mods, in fact this is my first time, and I'm desperate because I've play this mod for two days and its is AWESOME. And now it seems that Steam or my computer is ignoring Long War. And I followed the instructions that Dubious linked (thanks again)