I have had set my InDesign to start with:
1- "middle light" interface
2- measurement units on inches
3- export as PRINT PDF as default (no interactive pdf)
I saved all my personal preferences settings... BUT.... since I updated the latest version of InDesign (18.104.22.168) now every morning when I lunch my mac machine, all those settings are gone! ... could someone help me with this?. It's so draining to change all these settings every single day!...
System: Mac (27-inch, Late 2013) Yosemite ver. 10.10.5 InDesign(22.214.171.124)
There could be a permissions issue with where the preferences are stored.
Use Disk Utility in Utilities to handle your permissions.
Or, log in with a new user. If it works there, there is corruption or a conflict in your current user.
Presumably you set your InDesign preferences without any document open.
And then restarted ID to write them to disk....