gistfile1.cs

// Replacing this...

        public override string GetRuntimeReader(TargetPlatform targetPlatform)
        {
            var type = typeof(Texture2DReader);
            var readerType = type.Namespace + ".Texture2DReader, " + type.Assembly.FullName;
            return readerType;
        }


// With this...

        public override string GetRuntimeReader(TargetPlatform targetPlatform)
        {
            return "Microsoft.Xna.Framework.Content.Texture2DReader, Microsoft.Xna.Framework.Graphics, Version=4.0.0.0, Culture=neutral, PublicKeyToken=842cf8be1de50553";
        }