linker fejl i c++ program

Jeg er ved at skrive en 3DS MAX loader til opgenGL i C++, men jeg er løbet ind i et linker problem. Problemet opstår kun i nedenstående metode

void Object3DS::ReadVertices(FILE *file, Chunk* chunk)
{
  unsigned int totalVertices;
 
  //Linker fejl opstår her
  chunk->incrementReadBytes(fread(&totalVertices, 1, 2, file));
  Vertex *vertices = new Vertex[totalVertices];
  double* temp = NULL;
  //Linker fejl opstår her
  chunk->incrementReadBytes(fread(temp, 4, totalVertices, file));

  for(int i=0; i<(totalVertices/3); i++)
  {
    int vertexIndex = 3*i;
    vertices[i] = *(new Vertex(temp[vertexIndex], 
                      temp[vertexIndex+1], temp[vertexIndex+2]));
  }
   
  Mesh* currentMesh = this->meshList.at(totalMeshes-1);
  currentMesh->setVertexArray(vertices);
  currentMesh->setTotalVertices(totalVertices);
}

jeg anvender også chunk i andre metoder, men underlig nok får jeg ikke linker fejl i der.

void Object3DS::LoadModel(char* fileName)
{
  Chunk chunk;
  FILE *file = fopen(fileName, "rb");
  ReadSubChunk(file, &chunk);
}

void Object3DS::ReadSubChunk(FILE *file, Chunk* chunk)
{
  Chunk processingChunk;
  unsigned int length = chunk->getChunkLength(); 

  while( chunk->getChunkLength() < length )
  {
      ReadChunk(file, &processingChunk);

      switch( processingChunk.getChunkID() )
      {
      case MESH_BLOCK:
        {
        ReadSubChunk(file, &processingChunk);
        break;
      }

      case OBJECT_DESCRIPTION_BLOCK:
      {
        Mesh* mesh = new Mesh();
        char name[256];
        chunk->incrementReadBytes(readString(file, name));
        mesh->setMeshObjectName(name);
        meshList.push_back(mesh);
        ReadSubChunk(file, &processingChunk);
        break;
      }

    case TRIANGULAR_POLYGON_OBJECT:
    {
        ReadSubChunk(file, &processingChunk);
        break;
    }

    case VERTEX_LIST:
    {
      ReadVertices(file, &processingChunk);
      break;
    }
    }
    chunk-incrementReadBytes(processingChunk.getChunkLength());
  }
}