Attempted to read or write protected memory. C# windows app

Question

Hi Everyone,

I have got a project in which I need to create 3D meshes and embed them in the windows forms.

To achieve this, I am using,
 1. c#.net 4.0, Windows forms.
 2. Autodesk Maya -- to create 3D meshes
 3. Deep expression -- To convert the 3D meshes to .x format
 4 .True vision 3D -- API.

 5. DirectX

I am getting the error,

"Attempted to read or write protected memory. This is often an indication that other memory is corrupt."

Below is my code,

using System;
using System.Drawing;
using System.Drawing.Printing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using TV3D65;
using TV3DMedia;

//Declaring and initializing the objects for the rendering Engine,

        //Input Engine, Light Engine, Texture Factory, Material Factory,

        //Scene, and Global classes of TrueVision (TV) library

        TVEngine TV ;

        TVInputEngine Inp = new TVInputEngine();

        TVLightEngine TVLightEngine = new TVLightEngine();

        //TVTextureFactoryClass TexFactory = new TVTextureFactoryClass();

        TVMaterialFactory MatFactory = new TVMaterialFactory();

        TVScene TVScene = new TVScene();

        TVGlobals global = new TVGlobals();

        TVMesh obj1;

        TVMeshClass Room;

        TVTextureFactoryClass TvTextureFatory = new TVTextureFactoryClass();

        privatevoid Form1_Load(object sender, EventArgs e)

        {

            //Before trying to play with TrueVision, we have to create the TV8 object.

            TV = newTVEngine();

            //Now create a windows handle for the pictureBox1 so that all the rendering

            //will be done on the picture box

            //TV.Init3DWindowedMode(this.pictureBox1.Handle.ToInt32(), true);

            //This is the  path where our media (texture and meshes) files are placed

            TV.SetSearchDirectory(System.Windows.Forms.Application.ExecutablePath);

            //This is to set the rotation angle to degrees (the other option is radians)

            TV.SetAngleSystem(CONST_TV_ANGLE.TV_ANGLE_DEGREE);

            obj1 = newTVMesh();

            Room = (TVMeshClass)TVScene.CreateMeshBuilder("BMS");// Getting error here.

            TvTextureFatory.LoadTexture("D:\\BMS.x", "BMS", -1, -1, CONST_TV_COLORKEY.TV_COLORKEY_NO, false);

            Room.AddWall(global.GetTex("BMS"), 350.0f, -350.0f, -350.0f, -350.0f, 350.0f, 5.0f, -50.0f, 5.0f, true);

            Room.AddWall2(global.GetTex("BMS"), 350.0f, -350.0f, -350.0f, -350.0f, 350.0f, 5.0f, -50.0f, 5.0f, 10.0f, 10.0f, true);

            Room.AddWall3D(global.GetTex("BMS"), 350.0f, -350.0f, -350.0f, -350.0f, 350.0f, 5.0f, true, false, -50.0f, 5.0f, 1.0f);

            Room.AddWall3D(global.GetTex("BMS"), -350.0f, -350.0f, -350.0f, 350.0f, 350.0f, 5.0f, true, false, -50.0f, 5.0f, 1.0f);

            Room.AddWall3D(global.GetTex("BMS"), -350.0f, 350.0f, 350.0f, 350.0f, 350.0f, 5.0f, true, false, -50.0f, 5.0f, 1.0f);

            Room.AddWall3D(global.GetTex("BMS"), 350.0f, 350.0f, 350.0f, -350.0f, 350.0f, 5.0f, true, false, -50.0f, 5.0f, 1.0f);

            Room.AddFloor(global.GetTex("BMS"), -350.0f, -350 - 0f, 350.0f, 350.0f, -50.0f, 10.0f, 10.0f, true);

            Room.AddFloor(global.GetTex("BMS"), -350.0f, -350 - 0f, 350.0f, 350.0f, 300.0f, 10.0f, 10.0f, true);

        }

Please help me to sort out this.