Error When Uploading a New Record

Hi, I have been trying to upload a new record to one of my collections for a couple days now, but each time I have gotten this error: "There was an error processing your item: The server is currently unreachable or returned a fatal error. Please try again or contact us to report the issue." Is this an issue with my file or my uploading process? The project is Digital Editions of Valentine and Orson, collection Valentine and Orson, record VAOJewitt.