Yellow Triangle in Address Book - error ..Some contacts could not be copied to the server
I have a yellow Triangle that recently appeared in Address Book. It's located next to iCloud under the All Contacts portion of the Address Book. The error reads "Some Contacts could not be copied to the server". Can any one help me? I am using an iMac with Yosemite ver 10.10.2.
iMac 2GHz Intel Core Duo, Mac OS X (10.4.7), 2 GB DDR2 SDRAM