Dear players
We are aware of the problems that have taken place upon LiF:YO steam early access release. In short: Steam have seriously screwed up something and we are attempting to contact their staff to find out what is going on.
We assure you, that while problem is not on our side we will do our best to resolve it. We ask you for a little more patience, once we get reply from Steam staff and everything is going to work you will be informed.
@Update: Steam have fixed the issue, you should be able to install the game now.
LiF Team