I know this has been asked a million times but I think I need to make it a million and one.

I am getting "A generic error has occurred in GDI+" when trying to save a new bitmap.

I have completely stripped down to the most basic lines of code and I still get the error with the following method:

public class HomeController : Controller
{
  public ActionResult Index()
  {
    return this.View();
  }

  public void CreatePicture()
  {
    try
    {    
      // THIS WORKS
      System.IO.File.Copy("C:\\copyTest.bmp", "C:\\test folder\\copyTest2.bmp");

      // THIS WORKS
      System.IO.File.Delete("C:\\test folder\\deleteTest.bmp");

      using (Bitmap newBitmap = new Bitmap(120, 120))
      {
        // THIS FAILS
        newBitmap.Save("C:\\test folder\\test.bmp", ImageFormat.Bmp);
      }
    }
    catch (Exception ex) 
    {
      throw ex;
    }
  }
}

The code is called from an html link on a blank page within an MVC 3.0 website using anonymous login.

View:

@Html.ActionLink("Create Picture", "CreatePicture", "Home", new { })

I have checked the folder permissions of "test folder" and have given full access to the following:

• ASPNET
• NETWORK SERVICE
• IUSR

I still get the error... what have I missed / done wrong ?