Index: gallery_user.inc
===================================================================
--- gallery_user.inc    (revision 3368)
+++ gallery_user.inc    (working copy)
@@ -150,6 +150,11 @@
           } 
           // Continue to creation
         case G2_USER_DOES_NOT_EXIST:
+          // If this is the anonymous user, don't try to create
+          if (empty($user->uid)) {
+            return array(true, null);
+          }
+
           // Create the new user
           $ret = GalleryEmbed::createUser($user->uid, 
                   array('username' => $user->name,