Irrlicht Engine

bool App::run(void)
{
if(this->Init())//Inicjalizacja
return 1;
Kloc->Erase(); //<----- HERE
while(device->run())
{
const u32 now = device->getTimer()->getTime();
const f32 frameDeltaTime = (f32)(now - then) / 1000.f; // Czas w sekundach
then = now;

if(receiver.IsKeyDown(irr::KEY_KEY_W ...

I try do like this:
in destructor but I got error

Unhandled exception at 0xFEEEFEEE in Project3.exe: 0xC0000005: Access violation executing location 0xFEEEFEEE.

Hey Guys

I got problem with my IMeshSceneNode.

take a look at My code and read my problem description below:
Block.h
#ifndef __Block_H_INCLUDED__
#define __Block_H_INCLUDED__
#pragma once
#include <irrlicht.h>


using namespace irr;
using namespace core;
using namespace scene;
using namespace ...