I recently reset the login password on my cousin's Macbook Pro running Mavericks. Unfortunately, it did not reset the keychain password, so now I'm having trouble entering passwords for all kinds of stuff, including his iCloud. Since we're using the computer to access his iPad and other devices, I really would like to get Keychain up and running again. When I try to Reset the Default Keychain under Preferences, I get an error that says "The specified keychain could not be found." I have deleted the Keychains in ~Library/Keychains, although 2 were in use and could not be deleted. I have added a new login Keychain, but continue to receive error messages. Any help would be appreciated. I also have a 4 week old baby, so my ability to post lengthy responses in a timely fashion is severely limited.