3 Replies Latest reply on Nov 18, 2016 8:24 AM by BobLevine

    CS5.5 InDesign files saved in 2015 or earlier no longer open – WHY?


      I have only ever used Adobe Creative Suite Design Premium CS5.5 on my mac that currently runs OSX Yosemite (10.10.4).

      I have not needed to access my InDesign files for a year or two, so they have been saved on my external hard drive.

      Recently when I went to open up a variety of InDesign files ranging from 2015 or earlier this error message came up.

      Screen Shot 2016-11-18 at 14.06.01.png

      I have since got a new Mac that is running OS Sierra (10.12.1) and reinstalled Adobe Creative Suite Design Premium CS5.5 but the same issue happens.

      I am now installing a trial version of InDesign CC (2017) to see if that will open my old files, incase my existing software has somehow corrupt?


      I'm completely out of ideas.

      Can someone please help me get my InDesign files open.