Error 109
Hello. I was reading my PDF file one day ago. I highlighted and added some text to my file. But know I can't add text or can't underline and circle it. And when I click to save button it says "The document could not be saved. There was a problem reading this document" (109). This problem appears only in one of my files. Others work normally. I've updated latest version of Adobe. May it be the cause of the problem? (windows 7, updated version 20.006.20042) And what should I do to fix this problem? Help please...
