We have changed the code on the thank you page so that the download links can't be prefetched by AVG's linkscanner and similar programs (which essentially used expire the link for your user if your download limit was set to 1). If you were scraping this page, this might affect you.
Unlike before, we do not recommend scraping this page to show it's contents in your thank you page as the code may change from time to time. We recommend that you use an iFrame to display this page instead.