I have just upgraded to Yosemite from Snow Leopard. I now no longer have an address book just something called contacts. Fine, it has all my contacts details available. However, when sending emails I can no longer select multiple addresses. Each time I select an address the contacts window closes and I have to go in again and select the next address. Is there a way to select multiple addresses? I have tried using Control, Option and Command and various combinations of the three but with no success. Nor do I seem to be able to find any help online