--- ../cvs/entity-DRUPAL-7--1/entity_metadata/modules/field.info.inc	2010-07-13 11:42:22.000000000 +0200
+++ /drupal/sites/all/modules/entity/entity_metadata/modules/field.info.inc	2010-08-18 18:55:44.000000000 +0200
@@ -47,7 +47,7 @@ function entity_metadata_field_default_p
     // Add in instance specific property info, if given and apply defaults.
     $name = str_replace('_', '-', $field['field_name']);
     $property = &$info[$entity_type]['bundles'][$instance['bundle']]['properties'][$name];
-    $instance += array('property info' => array());
+    if(!isset($instance['property info'])) $instance['property info'] = array();
     $property = $instance['property info'] + array(
       'label' => $instance['label'],
       'type' => $field_type['property_type'],