Why don't you download InDesign CC2015 and CC2017. Make sure you keep the earlier versions as well for now.
Do you get the error if you start Cc2014 and use File > Open? Or only in double click?
Honestly I have no idea how to find CC2015 and CC2017!
I have the latest version of CC (9.3) - shouldn't this trump everything? I can't understand how I have what looks like the latest version of this but some of my clients have managed to get a "newer" version through Creative Cloud.
Am I being stupid?
Thanks Test Screen Name,
I have the same problem whether I double clicked or used file>open.
Actually its fixed itself now. I did the old 'turn the computer off and on again' trick and its opening now...