Something has happened to the settings for viewing PDFs on my Acrobat Pro. It was fine until about a month ago, but now, if you click on a bookmark, the page is not displayed. If you go to the Pages tab, the pages are all laid out in mini-versions that I cannot get to enlarge. I can open the same documents in Acrobat Reader and not have any problem. None of the information in Help explains what setting in Professional is controlling this functionality. Any ideas?