I don't seem to be able to highlight text in Preview. I have followed the directions in the help menu to no avail. I can add notes, comments, arrows, text, ovals and squares but when I click on highlight my mouse pointer stays as a pointer and doesn't shift to cross-hairs so I can't select any text to highlight. When I choose text in the tool bar I have the same problem. I have checked the encryption status in inspector and I am told that I have full permission. What's up? What can I do?