Hi
There are some problems with the Steam Download versions.
There have been corrupted installations for a few users.
I cross linked these threads at the UBI forums.
http://forums.ubi.com/eve/forums/a/t...5/m/1241021758
http://forums.ubi.com/eve/forums/a/t...5/m/7371074358
You should fill out a ticket at Steam for a refund.