Comment 2 for bug 462845

Syncing contacts is still not in place, but should be very soon.

As for the 'Error while adding a contact' message, could you please run, on a terminal:

$ evolution --force-shutdown
$ /usr/lib/evolution/evolution-data-server-2.28

and then start Evolution again and try again the operation that got you that error message? After doing so, if it fails again, please copy all the output in the terminal and paste it here