Question: How to make "open with" stick?
No matter how many times I define which app I want to use to open specific files (such as Preview for PDFs), after a few days the app gets changed to something I don't want (such as iBooks for PDFs).
I keep switching it back using the "Get info" - "Open With" - "Change all" trick, but that only helps for a while and then the bad settings are back 😟
Is there a way to freeze the "associated app" settings? I don't want any other processes changing the associations without my knowledge and consent.
OS X El Capitan (10.11.6)