--- views/flickr_attach_id.inc	2009-08-13 13:53:36.000000000 -0400
+++ views/flickr_attach_id.inc.NEW	2009-08-13 13:57:07.000000000 -0400
@@ -50,6 +50,10 @@ class flickr_attach_id extends views_han
     if ($this->table == 'node_flickr_albums' OR $this->options['display'] == 'id') {
       return $data['id'];
     }
+    // Return null if no image is attached
+    if (empty($data['id'])) {
+      return NULL;
+    }
     // review settings for flickr images
     $images = flickr_photo_get_sizes($data['id']);
     $image = $images[$this->options['display']]['source'];