Hi @coxcox ..I have found this..I hope that it is of some help 
SOURCE: turbofeature.com
Have a Corrupt or Unreadable PDF?
"There was a problem reading this document."
Did you just get Adobe Acrobat's error 109? Learn what that means and how to repair that here. Note that if you are seeing error 109 when opening a PDF file, chances are that the file is corrupt or at least unreadable.
How to Fix Adobe Acrobat's Error 109
First things first, try the following:
- If you downloaded the file, try downloading it again.
- If you created the file yourself, try creating it again from the original source. That may be all you need to do to solve this problem.
On the other hand, there may be nothing wrong with the file itself, but your PDF reader may be having trouble making sense of it. Here are a few options in that case:
If you are trying to view the PDF in your browser:
- Save the file to your desktop and then try to open it with the stand-alone Acrobat Reader.
- Sometimes the browser plugins cannot handle large or complex PDFs, or third party software has corrupted the browser plugin, rendering it useless.
You may have a newer PDF file,
and an old version of the Acrobat Reader.
- Try updating your version of Acrobat Reader (or Acrobat). This can solve many issues, including security issues known to exist in earlier versions of Acrobat software. You can download the free Acrobat Reader from Adobe's website.
