Comment 5 for bug 820438

I was unable to access my contacts after upgrading and this solved my problem. In my case, even after disabling my Online Google Account (which adds a second Google Contacts to evolution) I could not remove my old Google contacts. I turned off all the options (birthdays, offline sync, default, autocomplete) and it gave me an error that it could not be removed. After removing the cache, I can now delete this old Google Contacts addressbook and switch over to the one created by the Online Account feature.