Our office just recently upgraded to CS6. All of our in-house computers are running CS6 now, but some of our freelancers are still on CS5. How can we make sure that files created in CS5 continue to open in CS5? We need to make sure that old jobs still built in CS5 stay that way so freelancers don't face any formatting issues. We're working on large, complicated files, so consistency is key.
I've tried going to Get Info and changing the "Open with:" settings to InDesign CS5, but it overrides to CS6 every time. Is there any way to set things up so files don't automatically open in CS6, or are we just going to have to tiptoe when we open files and make sure we're bringing them into the right version?
You will not face the issue until and unless the file is not opened and saved in CS6 , If the file is saved in the CS6 once then it can't be reverted back to Cs5 without IDML, so you can keep them in the separate folder with the backup and take precautions while opening the file.
Also I have seen post wherein some apps or plugin named as SOXY was discussed to keep the file format separate for CS5 and CS6 , not sure how this works as haven't used by myself.
The best bet is to install soxy from Rorohiko.com. It intercepts the open command and routes it to the version from which it was saved, if present.