Tony You're not the only one getting this error <smile>!! Over the weekend, I attempted to resubmit Duane Iverson's "Witch-hunt" book on several occasions and got that error. I then released the book; redownloaded figuring that something perhaps was corrupted in the encoding, and tried again. Well, you can guess the results. At the time, I guessed that it was "stupid me" (the novice kid validator on the block) that was the culprit rather than the system itself burping for whatever reason. Needless to say, I was very frustrated having repeatedly failed at the return process mucho times and couldn't figure out what possibly I was doing wrong, but guessing for certain that I was causing the error.