XNA Windows Game (4.0) ContentLoadException

其他人可以制作和编译这个程序(点击这里)直到第一次"快速构建"…?(直到他们说"这将是一个伟大的时间来做一个快速构建")

由于某些原因，我一直得到这个异常!

我已经检查了这个Stackoverflow解决方案中提到的所有内容:点击这里，但没有一个解决了我的问题:(

my image被放置在Content区域。它不在文件夹中。

请帮忙!

下面是我的代码:

namespace myGame
{
    public class Game1 : Microsoft.Xna.Framework.Game
    {
        GraphicsDeviceManager graphics;
        SpriteBatch spriteBatch;
        SpriteBatch mBatch;
        Texture2D mHealthBar;
        public Game1()
        {
            graphics = new GraphicsDeviceManager(this);
            Content.RootDirectory = "Content";
        }


        protected override void Initialize()
        {
            // TODO: Add your initialization logic here
            base.Initialize();
        }


        protected override void LoadContent()
        {
            spriteBatch = new SpriteBatch(GraphicsDevice);
            // TODO: use this.Content to load your game content here
            mBatch = new SpriteBatch(this.graphics.GraphicsDevice);
            ContentManager aLoader = new ContentManager(this.Services);
            **//ERROR occurs here!**
            mHealthBar = aLoader.Load<Texture2D>("HealthBar") as Texture2D;
        }


        protected override void UnloadContent()
        {
            // TODO: Unload any non ContentManager content here
        }


        protected override void Update(GameTime gameTime)
        {
            // Allows the game to exit
            if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed)
                this.Exit();
            // TODO: Add your update logic here
            base.Update(gameTime);
        }


        protected override void Draw(GameTime gameTime)
        {
            GraphicsDevice.Clear(Color.CornflowerBlue);
            // TODO: Add your drawing code here
            mBatch.Begin();
            mBatch.Draw(mHealthBar, new Rectangle(this.Window.ClientBounds.Width / 2 - mHealthBar.Width / 2,
                 30, mHealthBar.Width, 44), new Rectangle(0, 45, mHealthBar.Width, 44), Color.Red);

            //Draw the box around the health bar
            mBatch.Draw(mHealthBar, new Rectangle(this.Window.ClientBounds.Width / 2 - mHealthBar.Width / 2,
                  30, mHealthBar.Width, 44), new Rectangle(0, 0, mHealthBar.Width, 44), Color.White);
            mBatch.End(); 
            base.Draw(gameTime);
        }
    }
}