I have a brand new install of Linux Mint 18, and just installed PI. Upon exiting the program I get a plethora of errors. They include "Error Writing Settings Data (int)" and "Error Writing Settings Data (bool)" as well as "Settings: Error writing local integer data: Interfaces/Preferences/Geometry/Left" "Error Writing Settings Data (string)".
It will not allow me to complete the internal updates, I can download them inside the program, but when I try to exit, that's when I get all those errors and then restarting the program, the updates are available again, but not applied.
I'm running Linux Mint 18 64bit and PixInsight Core 01.08.04.1198 Ripley (x64)