NSUserDefault getting reset

Question

I have an OSX app, where I'm using NSUserDefault to store simple value and a lot of people have started reporting to me, that the values in NSUserDefault is getting deleted randomly.

Has anyone else experienced something similar? I've searched all over SO, but I don't seem to find anyone else with the same issue.

Answer 1

NSUserDefaults can be vanished, when you change your BundleIdentifier ,
as the file is stored by your bundleId.

They can be found in more than one place:

~/Library/Preferences/com.example.myapp.plist
~/Library/SyncedPreferences/com.example.myapp.plist

and if sandboxed

~/Library/Containers/com.example.myapp/Data/Library/Preferences/com.example.myapp.plist
~/Library/Containers/com.example.myapp/Data/Library/SyncedPreferences/com.example.myapp.plist