I paid for Adobe Acrobat X Pro and received my serial number. I have followed the instructions for downloading. But when I try to install the product all I get is "A problem occurred while extracting some files. Check available space on your computer and the write privileges on the destination folder." And of course I have plenty of available space on my computer and I am an administrator on this computer so I have all privileges. I have read the troubleshooting guide, the FAQ, etc., all to no avail. I know I am not the only person having this problem. Please will someone provide a solution?