Hello For a while I can highlight text and mark, etc but after I save the PDF it sometimes no longer allows me to highlight any text, even text I have already highlighted. I have rebooted, closed Preview etc and the PDF no longer lets me highlight any text. I cannot even Copy/Cut... The PDF in question works when I first download it from the Web but once I update some highlights with a Save it no longer allows text highlighting for copying, or marking. Ideas???