EasyVR3 - EasyVR not detected!

I have the EasyVR3 module mounted on it's shield. I've got that stacked on the DUE and the jumper is set to HW(as is advised for the DUE, uses pins 0 and 1). I'm following the user manual but as it instructs on page 22, after I upload this EasyVR Tester over the native USB and view serial monitor, before I can even send the '?' it returns "EasyVR not detected!"(as per line 118 of the code) and prints it over and over in intervals of a few seconds. The LED on the module is lit, indicating that the shield is making good contact. Using Arduino 1.8.1.

Thanks for the help.

#include "Arduino.h"
#if !defined(SERIAL_PORT_MONITOR)
  #error "Arduino version not supported. Please update your IDE to the latest version."
#endif

#if defined(SERIAL_PORT_USBVIRTUAL)
  // Shield Jumper on HW (for Leonardo and Due)
  #define port SERIAL_PORT_HARDWARE
  #define pcSerial SERIAL_PORT_USBVIRTUAL
#else
  // Shield Jumper on SW (using pins 12/13 or 8/9 as RX/TX)
  #include "SoftwareSerial.h"
  SoftwareSerial port(12, 13);
  #define pcSerial SERIAL_PORT_MONITOR
#endif

#include "EasyVR.h"

EasyVR easyvr(port);

int8_t bits = 4;
int8_t set = 0;
int8_t group = 0;
uint32_t mask = 0;
uint8_t train = 0;
uint8_t grammars = 0;
int8_t lang = 0;
char name[33];
bool useCommands = true;
bool useTokens = false;
bool isSleeping = false;

void setup()
{
  // setup PC serial port
  pcSerial.begin(9600);

  // bridge mode?
  int mode = easyvr.bridgeRequested(pcSerial);
  switch (mode)
  {
  case EasyVR::BRIDGE_NONE:
    // setup EasyVR serial port
    port.begin(9600);
    // run normally
    pcSerial.println(F("---"));
    pcSerial.println(F("Bridge not started!"));
    break;
    
  case EasyVR::BRIDGE_NORMAL:
    // setup EasyVR serial port (low speed)
    port.begin(9600);
    // soft-connect the two serial ports (PC and EasyVR)
    easyvr.bridgeLoop(pcSerial);
    // resume normally if aborted
    pcSerial.println(F("---"));
    pcSerial.println(F("Bridge connection aborted!"));
    break;
    
  case EasyVR::BRIDGE_BOOT:
    // setup EasyVR serial port (high speed)
    port.begin(115200);
    // soft-connect the two serial ports (PC and EasyVR)
    easyvr.bridgeLoop(pcSerial);
    // resume normally if aborted
    pcSerial.println(F("---"));
    pcSerial.println(F("Bridge connection aborted!"));
    break;
  }

  // initialize EasyVR  
  while (!easyvr.detect())
  {
    pcSerial.println(F("EasyVR not detected!"));
    delay(1000);
  }

...

There wasn't enough room for the full code but it's just the standard example provided called "TestEasyVR".