Every entry in CFBundleDocumentTypes must include a CFBundleTypeName key, which is a plain-language label (for example, “Blood Pressure Database”) that describes the file type. Right now your plist only has the technical bits (like LSItemContentTypes) but not that required name. To fix is add a CFBundleTypeName string to the dictionary, and make sure LSItemContentTypes isn’t empty but points to their declared UTI (e.g. clays.reading). Once those two pieces are in place, the archive should validate.