I updated my whole cloud last week. Now I can't open a InDesign document saved just the day before. I get the error message:
Cannot open “filename” because it was saved with a newer version of Adobe InDesign CC (10.0).
Cannot open “filename” because it was saved with a newer version of Adobe InDesign CC (10.0). You must use that version or later to open the file. To then enable it to be opened in this version, choose save as InDesign CS4 or later, or export to IDML.
This is a document that I created in InDesign CC just last week.
To open an INDD file in the older version (CS4-CC), you need to save it as an IDML. For CS3 & older versions, save it as an INX.
Version 9 is CC, version 10 is CC 2014, a new program, not a simple program dot-release update. As a subscriber you are entitled to download and install the new versions (Quit the CC App, then restart so it will update and show you the 2014 versions).