09-03-2011, 02:45 AM
Strange symptom.
When it happened to me, once I changed the pref's and then restored the original settings, my previews showed the thumbnails properly.
Images in a vCard file aren't just references back to the thumbnail in the Address Book DB. They're stored in the file. You can open an exported vCard file in TextEdit and have a look for yourself. There should be a second copy of the thumbnail stored when you duplicate an entry by importing from a vCard file.
BTW: Don't forget that you can export your whole Address Book DB to an archive that can be re-imported if you want to experiment more and might delete or modify contacts that you'd want to restore.
When it happened to me, once I changed the pref's and then restored the original settings, my previews showed the thumbnails properly.
Images in a vCard file aren't just references back to the thumbnail in the Address Book DB. They're stored in the file. You can open an exported vCard file in TextEdit and have a look for yourself. There should be a second copy of the thumbnail stored when you duplicate an entry by importing from a vCard file.
BTW: Don't forget that you can export your whole Address Book DB to an archive that can be re-imported if you want to experiment more and might delete or modify contacts that you'd want to restore.