im trying this out on one of our servers and here is an error that i have in the logs ..
L 10/11/2009 - 06:19

2: [SM] [0] Line 69, sm_2x-AntiAimbot.sp:

layerDamage()
L 10/11/2009 - 06:19

2: [SM] Native "GetClientAuthString" reported: Client index 0 is invalid