Index: location.module
===================================================================
--- location.module	(revision 66814)
+++ location.module	(working copy)
@@ -947,7 +947,7 @@
             $node->locations[$index]['longitude'] = $data['lon'];
             $node->locations[$index]['source'] = LOCATION_LATLON_GEOCODED_EXACT;
           }
-          elseif ($data = location_get_postalcode_data($node->location)) {
+          elseif ($data = location_get_postalcode_data($node->locations[$index])) {
             $node->locations[$index]['lat'] = $data['lat'];
             $node->locations[$index]['lon'] = $data['lon'];
             $node->locations[$index]['latitude'] = $data['lat'];