Maybe you've tried today (withut any success) to access NewsPageDesigner. Charles Apple explains the reasons on his blog. As we knew months ago, NPD has to change its servers. At this time they are on the process, and so it could stay two months.
Meanwhile, if you're interested, you can upload your works to the Infographics News Flickr group. It's not the same, but is somewhere to save your work until NPD will be back.