Hello. I am having difficulty downloading pdf files from the Internet. May have started (not sure) when I upgraded Safari. It appears that the website attempts to download the pdf but I get a black screen without the document. When using the option to download directly to desktop, it works for some sites but not others. For those that do not work, it downloads a useless track.php.html file. I googled the problem and could not find this particular issue. First time poster so I apologize if I am in the wrong forum. Thanks !