[sonnkz]

fijate asi

Код:

CMD:sms(playerid, params[])
{
    new str[256], str2[256], id, Name1[MAX_PLAYER_NAME], Name2[MAX_PLAYER_NAME];
    if(sscanf(params, "us[128]", id, str2))  return SendClientMessage(playerid, 0xFF0000FF, "USAR: /sms <id> <mensaje>");
    if(!IsPlayerConnected(id)) return SendClientMessage(playerid, 0xFF0000FF, "ERROR: Usuario no conectado");
    if(playerid == id) return SendClientMessage(playerid, 0xFF0000FF, "ERROR: No podes enviarte a ti mismo!");
    {
        GetPlayerName(playerid, Name1, sizeof(Name1));
        GetPlayerName(id, Name2, sizeof(Name2));
        format(str, sizeof(str), "SMS a %s(ID %d) enviado con exito!", Name2, id);
        SendClientMessage(playerid, COLOR_GREEN, str);
        format(str, sizeof(str), "SMS de %s(ID %d): %s", Name1, playerid, str2);
        SendClientMessage(id, COLOR_GREEN, str);
    }
    return 1;
}

te falto definir que string va a tener 128 celdas