I've just updated to 10.12.2 and now Contacts.app does not open, it just shows a spinning beachball, requiring a Force Quit.
I have already tried without success:
- logging into a newly created user with admin privileges
- deleting the directory
- turning off Contacts for iCloud
In the Console, I don't see any errors generated by Contacts.app itself, but something called
sandbox has this error:
Sandbox: Contacts(912) deny mach-lookup com.apple.decalog4.incoming