The Open XML SDK is based on the classes in the System.IO.Packaging namespace, so if there is a bug in System.IO.Packaging, then that bug is also in the Open XML SDK. Well, there is a bad bug in System.IO.Packaging, which causes it in some cases to throw spurious ObjectDisposedException and NullReferenceException when used in a … Continue reading Announcing the Release of a New System.IO.Packaging Implementation