Newbie - GADGETS3D Shield with Panel problem

I'm assembling my first printer - an I3 Steel - and am having problems with the RAMPS. It is probably my error but I can't see what is wrong.

I have a RAMPS v1.4 and a GADGETS3D Shield with Panel [reprap.org].

I have v1.6.4 of Arduino and Marlin v1.0.2. I have followed the guidance on the page listed above under Software Configuration so my configuration.h has these lines:

/ The GADGETS3D G3D LCD/SD Controller (blue PCB )
// [reprap.org]
#define G3D_PANEL

I attach my pins.h file as well.

I have compiled and uploaded the code but cannot get the LCD to do anything other than shown in the attachment. I have changed the cables and ensured that they are seated properly.

What am I doing wrong, please?

Also, where is the best guidance for a newbie on the configuration (firmware) and calibration of a new printer?

Thanks.

Richard

I've proven that the display works using

// include the library code:
#include <LiquidCrystal.h>

// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(16, 17, 23, 25, 27, 29);

void setup() {
  // set up the LCD's number of columns and rows:
  lcd.begin(16, 2);
  // Print a message to the LCD.
  lcd.print("hello, world!");
}

void loop() {
  // set the cursor to column 0, line 1
  // (note: line 1 is the second row, since counting begins with 0):
  lcd.setCursor(0, 1);
  // print the number of seconds since reset:
  lcd.print(millis() / 1000);
}

So the problem must be in the Marlin code I'm using. It is very likely to be something I'm missing (i.e. my error, not the Marlin code) but I can't figure it out.

Can anyone help, please?

Richard

I've now managed to source the manufacturer firmwars [drive.google.com] but it simply hangs when compiling or uploading in Arduino v1.6.4 under Windows 7.

I have re-installed the Arduino environment and this still doesn't work.

What am I doing wrong, please?

Richard

This is what happens (see attachment). It stops there every time.

Richard