This seems to be a bit of an infamous error all over the web. So much so that I have been unable to find an answer to my problem as my scenario doesn\'t fit. An exception ge
Had a very similar problem and also tried cloning the image which doesn't work. I found that the best solution was to create a new Bitmap object from the image that was loaded from the memory stream. That way the stream can be disposed of e.g.
using (var m = new MemoryStream())
{
var img = new Bitmap(Image.FromStream(m));
return img;
}
Hope this helps.