8 Replies Latest reply on Jun 21, 2011 7:34 AM by neng2

    Cannot open old pdfs -- can anyone help?

    neng2

      Hi,

      I have a CD with some PDFs that were created in 2004 and cannot get them to open. I get the dreaded "...is either not a supported file type or because the file has been damaged..." message, which seems to result from a number of causes, none of which are similar to my problem.

      Anyway, until I got a Vista computer a couple of years ago, the files opened fine.  Even though I couldn't open them on my Vista computer, I could still open them on my XP laptop.  Now I cannot open them on the laptop either, even though I tried Adobe Reader 9 and 10, then replaced them with Adobe Reader 6 , which came on the disc with the PDF.   I know the disc is not damaged because I can open all other file types.

      Can anybody advise me?  These pdfs are a auto manual and I cannot fix my car without them.

      Thanks,

      Neal Engledow

        • 1. Re: Cannot open old pdfs -- can anyone help?
          try67 MVP & Adobe Community Professional

          There shouldn't be a problem to open old PDF files, provided they were created in a standard way.

          Did you try dragging them to your desktop and opening them from there? Maybe you could upload one of these files somewhere (like acrobat.com) and share it with us, so we could test it out for ourselves.

          • 2. Re: Cannot open old pdfs -- can anyone help?
            neng2 Level 1

            Try67,

            Thanks for responding. I have tried dragging files onto my desktop but still cannot open them.  I created a workspace on acrobat.com but get an error message when I try to upload one of those files (other pdfs upload fine) the error message says "svr.Unknown
            [Unknown] Stream does not represent a PDF document."  Can I attempt to e-mail one to you?  I can e-mail them to myself, but they still don't open.

            I also have tried three other pdf readers without luck.

            Neal

            • 3. Re: Cannot open old pdfs -- can anyone help?
              try67 MVP & Adobe Community Professional

              Yeah, you can email one of them to me. Click on my username for my address.

              My guess is they were not created with a conforming application and are now

              considered corrupt. You should consider contacting the manufactur and ask

              them for new copies.

              • 4. Re: Cannot open old pdfs -- can anyone help?
                neng2 Level 1

                It is on the way. If you too have problems, I will try the company that created the CD to see if they can update it.

                Neal

                • 5. Re: Cannot open old pdfs -- can anyone help?
                  Mindset Guru Level 1

                  I think this is correct. Even established software brands will have difficulty with the new format - I have a music software program that worked fine in XP and works ok in Vista but there are certain compatability problems which mean I cannot access certain functions any more.

                  • 6. Re: Cannot open old pdfs -- can anyone help?
                    neng2 Level 1

                    I believe I have a solution, or part of one anyway.  When I first got the DVD it would start automatically and provide me with an index page that I used to access the PDFs.  For some reason, the index does not auto run anymore, but when I double click on the correct file on the DVD -- called AutoRunHL -- the index opens and I can get to the pdfs.  This only works on my XP laptop, not my Vista desktop.  AutoRunHL is described as an .exe file and an HCPS loader, whatever that is.  Bottomline, I can fix my car now.  Thank you all for your help.

                    Neal

                    • 7. Re: Cannot open old pdfs -- can anyone help?
                      try67 MVP & Adobe Community Professional

                      From what I've seen, it's not a PDF file at all. At least, not one that was

                      created conforming to the PDF ISO standards. The fact that it can only be

                      viewed using a dedicated application supports that.

                      • 8. Re: Cannot open old pdfs -- can anyone help?
                        neng2 Level 1

                        The makers of the CD say that they have put out a new DVD that works on

                        newer OSs.  I find it strange that a file with a .pdf extension is not a

                        PDF, but what do I know.

                        Thanks again for your help.

                        Neal