Im having same problem as mamboto and Bilal. Im using vista and already have a cracked launcher (SteamUp!) But i removed it before trying to apply this patch. Any help is apreciatied.
Okay I solved the problem with the steam.dll file being to small!?! Go to DLL-files.com - Download all your missing dll-files. and put "steam.ll" in the search box and download!?! Then extract into your steam directory and replace old steam.dll and you should be all set!?! Just make sure that Steam is closed first and the run the undead patch 6.36 and you are good to go!?!