Problem with the last version <<AccelStepper v1.40>>

I get an error when I try to create a instance of class with AccelStepper v1.40.

Constructor & Destructor Documentation:

AccelStepper::AccelStepper ( uint8_t interface = AccelStepper::FULL4WIRE,
uint8_t pin1 = 2,
uint8_t pin2 = 3,
uint8_t pin3 = 4,
uint8_t pin4 = 5,
bool enable = true

But when I do this:

#include <AccelStepper.h>

AccelStepper stepperMotorY(FULL4WIRE, 2, 3, 4, 5, true);

I get this error:

In function __static_initialization_and_destruction_0': undefined reference to AccelStepper::AccelStepper(unsigned char, unsigned char, unsigned char, unsigned char, unsigned char, bool)

I don’t understand what’s the problem, someone can help me please.

You might get an answer if you posted your code, in full, in code tags

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