update problem

[NevoH72]

If you are a Steam user, perform a file integrity check. This will fix most problems.

Otherwise, did you download and install the update from this thread? http://www.frictionalgames.com/forum/thread-24334.html

If yes, then
You have either installed the update in the wrong directory, or did not install correctly (for example, your installation was interrupted).

If no, then download the update package suitable for your system and retry the installation.
By default, the updater should locate where your Amnesia folder is, usually located at:
C:/Program Files (x86)/Amnesia - The Dark Descent/

I don't really know how to install it correctly,can you help me?
And i did download from this thread,i don't use steam