GDI+ Generic Error

Hi,


I am trying to convert an image to a byte array.  But I have searched the internet and most pretty much say to do something similar, which is the code I have below.

But when I call this I get a "generic GDI+ error has occured" exception on the imageIn.Save line, and I don't know why and many search have failed to reveal the problem.

I have tried different images, different machines, but I get the same problem.  Can somebody help?

private byte[] byteImageConvert(System.Drawing.Image imageIn)
{
    ImageCodecInfo codec = null;
    foreach (ImageCodecInfo e in ImageCodecInfo.GetImageEncoders())
    {
        if (e.MimeType == "image/jpeg")
            {
            codec = e;
                    break;
        }
    }
     
    using (EncoderParameters ep = new EncoderParameters())
    {
        ep.Param[0] = new EncoderParameter(Encoder.Quality, 100L);
     
            using (MemoryStream ms = new MemoryStream())
            {
                    imageIn.Save(ms, codec, ep);
                    return ms.ToArray();
            }
    }
}