Then you should stick with 2014.
Thanks Bob, it make sence, though i din´t know how to get down to indesign 2014 on my creative cloud.
but basically it seems that the problem is that the proofreaders dropbox does´t sync automatically, and he has enough space left for the doc.
is it right that he has to check it with the dropbox assistance?
thanks a lot Bob for the valuable help!!!
If it’s not syncing, I have no idea what the issue is but it has nothing to do with InDesign.