This update killed iCloud and is causing huge headaches. I am getting repeated popups of "messages agent warns to use the "login" keychain. Please enter the keychain password." "Accountsd wants to use the login keychain," "CalendarAgent wants to use the login keychain" etc. but every time I enter the password it does not recognize it. I cannot do anything to get these popups to go away, even if I hit cancel.
What's going on??
You're a developer, and you don't know how to solve KeyChain issues?
Go to your user library, there's a bug in 10.9 that seems to transform folders like 'KeyChain' into files. Delete the file, create a new folder called KeyChain, log out, log back in, solved.
If you do have a KeyChain folder, open the KeyChain Utility, delete your 'login' keychain, and create a new one called 'login', using the same password your local account uses. Solved.