[wups]

Well lol..

pawn Код:

#if defined _SSIc_included
        #endinput
#endif 
#define _SSI_included

SSIc is not the same as SSI, so your code on top is worthless.
Message to rcon:

pawn Код:

if(IsPlayerConnected(i) || IsPlayerAdmin(i))

This will send the message to ALL connected players, even if they aren't admins.
Change || to &&
You store chatlogs in a folder. But you don't warn people to create them. IF they don't - their server will crash.
Well, atleast the function GetName(released about 1000 times) is alright.