Thanks to canucksgirl and Kiteman for helping me figure this out. I am using Windows 7. When I select an ebook there is the general introductory info. Apparently most people two button that clearly show up prompting you to chose epub or pdf. All I have is a very thin yellow line with a white dash in the middle. This seems to correspond with the two yellow buttons. If I very carefully and delicately pick the left yellow line= pdf button, I can download with no problem. I do not know if this is a programing problem or my computer problem but this is how I figured out how to work around it.