Irrlicht Engine

I don't know why but it's ocuur that my smgr can't handle value.

• ITexture* movTxtr = driver->addTexture(dimension2d<s32>(800,600),"",ECF_A8R8G8B8);
  
  smgr->addCameraSceneNode(0,vector3df(0,0,-30),vector3df(0,0,0));<-------------error occur here
  
  f32 U = (f32)movie->MovieWidth() / (f32)TextureWidth;
  f32 V = (f32)movie->MovieHeight() / (f32)TextureHeight;
  CSampleSceneNode* myNode=new CSampleSceneNode(smgr->getRootSceneNode(),smgr,666,U,V);
  myNode->setMaterialTexture(0,movTxtr);
  myNode->setMaterialType(EMT_TRANSPARENT_VERTEX_ALPHA);
  myNode->setPosition(vector3df(0,5,0));
  myNode->setScale(vector3df(2.5,0.75f,0));
  
  movie->LoadMovie("../media/sequence 01.avi",true,true);
  // movie->SetMovieFPS(10);
  movie->SetLooped(false);
  
  while(device->run() && driver&&flag)
  if (device->isWindowActive())
  {
  movie->NextMovieFrame();
  movie->DrawMovie(0,0,movTxtr);
  smgr->drawAll();
  
  if(KeyDown(KEY_ESCAPE)){
  movie->Stop();
  driver->beginScene(true, true, SColor(0,0,0,0));
  engine->play2D("../media/leon.wav", true);
  env->drawAll();
  driver->endScene();}
  
  }
  
  device->drop();

It;s tell that
smgr
l-->-irr::IUnknown {ReferenceCounter=??? DebugName=??? } irr::IUnknown
l l-> __vfptr CXX0030: Error: expression cannot be evaluated
l l-> ReferenceCounter CXX0030: Error: expression cannot be evaluated
l l-> DebugName CXX0030: Error: expression cannot be evaluated
l-->__vfptr CXX0030: Error: expression cannot be evaluated

Please help me

Ok, now I can solve the this troblem but another problem occur

the video don't draw to the screen.

-*- Can you help me