Maybe it means that the URL you scraped is in your Scrapebox black list - the list of URLs where you don't want to spam comments that Scrapebox have and that, if you notice, get updated from time to time when you turn Scrapebox on (if not everytime you open it, I don't remember).
Let's say you scrape a inner page of Matt Cutts personal blog. His blog is in the Blacklist (you want to spam Google's Spam Team Chief? I guess you don't) so it's quite reasonable every inner page of it should be blacklisted.
My .02 cents.