The installation process is rather simple.
Please see this thread for details and links.
here
https://forums.alliedmods.net/showthread.php?t=114153
or here viewtopic.php?f=4&t=231
Specifically KAC version 1.2.0 and above require Sockets 3.0.0 Alpha or later installed
KAC 1.2.0 will NOT work correctly with earlier versions of Sockets! & will crash your server.
Download the latest debug build from sfPlayer.
Currently listed as socket_3.0.0alpha.zip
http://forums.alliedmods.net/showthread.php?t=67640
Then install
KACSM/BETA/kigen-ac-pub.smx
Installation path listed below is for Counter-Strike Source
KAC 1.2.0 Beta or later Installation path
cstrike/addons/sourcemod/plugins/kigen-ac-pub.smx
Sockets 3.0.0 Alpha or later Installation path
cstrike/addons/sourcemod/extensions/socket.ext.dll
cstrike/addons/sourcemod/extensions/socket.ext.so
cstrike/addons/sourcemod/scripting/include/socket.inc
cstrike/addons/sourcemod/scripting/example
cstrike/addons/sourcemod/scripting/listenexample
cstrike/addons/sourcemod/scripting/selftest