I have tried to open many ID files and am presented with the same message everytime..."Cannot open the file"xxx”. Adobe InDesign may not support eht file format, a plug-in that supports the file format may be missing, or the file may be open in another application." I am running OS 10.9 and have updated ID CC with the latest update provided yesterday from the CC panel.
Are the files on your hard drive or a network? Clean install of 10.9 and ID, or an upgrade/migration? Are you sure you are trying to open .indd files?
I was trying to work on files that were indeed on a network server. Moving them to my desktop or other computer location solved the problem. Must be some network permissions were changed with the latest upgrade of OS 10.9.
This fixed my issue as well, thanks! Could not access files on a network with newest update.
Can network settings be manually fixed while waiting for next update?