[Adityz]

You just need to change the first line to this - CMD:kickall(playerid, params[]) like this :

pawn Код:

CMD:kickall(playerid, params[])
{
    for(new i = 0; i < MAX_PLAYERS; i++))
    {
        if(!IsPlayerAdmin(i))
        {
            if(IsPlayerConnected(i))
            {
                SendClientMessageToAll(-1,"All Players Have Been Kicked From The Server By An Admin.");
                Kick(i);                
            } 
            else return SendClientMessage(playerid,-1,"There Are No Players Connected.");
        }
    }
   return 1;
}

Edit - wow Namer's fast..