When I try to add new contacts, they are not saved
For months now, when I try to add new contacts it is a struggle. Most of the time the contact doesn't save. It looks like it is being entered, but when I view my Contact list, the new one is not there. Sometimes an entry shows up at the bottom of my contact list saying "No name." I never used to have this problem. What is going on?????
MacBook Pro 13″, OS X 10.10