I have a scenario that I need help with. I have a new MacBook Pro (100% up to date) and when i click links for PDFs, Safari opens up a new tab and the whole tab is a darker grey color and the PDF never displays. I have followed many suggestions of deleting this AdobePDFViewer file but unfortunately I do not possess it. So I downloaded Adobe Reader and installed it. I set it to not be the default and to not open PDFs from Internet. I deleted Adobe Reader and then i found the AdobePDFViewer file and I also deleted that. But I STILL can not view PDFs in Safari...any ideas on this one?