Index: modules/field/field.attach.inc
===================================================================
RCS file: /cvs/drupal/drupal/modules/field/field.attach.inc,v
retrieving revision 1.31
diff -u -r1.31 field.attach.inc
--- modules/field/field.attach.inc	11 Jul 2009 00:56:45 -0000	1.31
+++ modules/field/field.attach.inc	15 Jul 2009 23:51:15 -0000
@@ -712,7 +712,7 @@
  *   The object with fields to save.
  */
 function field_attach_delete_revision($obj_type, $object) {
-  _field_invoke('delete revision', $obj_type, $object);
+  _field_invoke('delete_revision', $obj_type, $object);
   module_invoke(variable_get('field_storage_module', 'field_sql_storage'), 'field_storage_delete_revision', $obj_type, $object);
 
   // Let other modules act on deleting the revision.
@@ -886,8 +886,8 @@
     $type = content_types($node->type);
     // Save cycles if the type has no fields.
     if (!empty($type['instances'])) {
-      $default_additions = _field_invoke_default('prepare translation', $node);
-      $additions = _field_invoke('prepare translation', $node);
+      $default_additions = _field_invoke_default('prepare_translation', $node);
+      $additions = _field_invoke('prepare_translation', $node);
       // Merge module additions after the default ones to enable overriding
       // of field values.
       $node = (object) array_merge((array) $node, $default_additions, $additions);