[solved]avrdude: stk500_getsync(): not in sync: resp=0x00

Hi,
i can't upload into my Arduino DUE, I have this message:

avrdude: stk500_getsync(): not in sync: resp=0x00

How i can solve it ?

Thx.

Look here:
http://forum.arduino.cc//index.php?topic=191873.msg1417934#msg1417934

I found whith install/uninstall the board was on “Arduino Uno” but i have compilation error :

C:\Users\ronaldo\Documents\Arduino\libraries\LiquidCrystal\FastIO.cpp: In function ‘void fio_shiftOut1(fio_register, fio_bit, uint8_t, boolean)’:
C:\Users\ronaldo\Documents\Arduino\libraries\LiquidCrystal\FastIO.cpp:214: error: ‘_BV’ was not declared in this scope

whith this program:

#include <Wire.h>

#include <FastIO.h>
#include <I2CIO.h>
#include <LCD.h>
#include <LiquidCrystal.h>
#include <LiquidCrystal_SR.h>
#include <LiquidCrystal_SR2W.h>
#include <LiquidCrystal_SR3W.h>

LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
#define CONTRAST_PIN 9
#define BACKLIGHT_PIN 7
#define CONTRAST 125

void setup() {
// put your setup code here, to run once:
// Switch on the backlight and LCD contrast levels
pinMode(CONTRAST_PIN, OUTPUT);
pinMode(BACKLIGHT_PIN, OUTPUT);

digitalWrite(BACKLIGHT_PIN, HIGH);
analogWrite (CONTRAST_PIN, CONTRAST);

lcd.begin(16,2); // initialize the lcd

lcd.home (); // go home
lcd.print(“Hello, ARDUINO “);
lcd.setCursor ( 0, 1 ); // go to the next line
lcd.print (” WORLD!”);
}

void loop() {
// put your main code here, to run repeatedly:

}