I have the most recent version of Indd cc on my computer. I have a client on 6 (not CC) and am having trouble sharing an idml file with them. I tried exporting it with both my Macs, but they couldn't open the file created with either. I myself, WAS able to open it on a completely different system: a PC with Indd 5 installed. Lastly, I had my brother export the idml off of his mac cc system and the client WAS able to open up his idml file.... So, what is going on? With mine, they get the missing plugin error. Any ideas? I will need to share idml files with them a lot, going forward, and need to figure out a workaround that does not include my brother! thanks!
CS6 is included with Creative Cloud.
You can avoid all of this by using that version with this client.