When adding a resource like an image to a Document from a MemoryStream the above error is thrown in the Save() method, when the stream was already closed. I could find several topics about this but none with a workable s…...AttachmentType { Pdf, Image } class Attachment { public AttachmentType AttachmentType...AddAttachments(document, new List<Attachment>() { new Attachment() { AttachmentType...