}
// Make sure our functions are there
-require_once(PATH."inc/libs/refback_functions.php");
+LOAD_INC_ONCE("inc/libs/refback_functions.php");
// Sanity-check: Do we have ref level 0?
$result = SQL_QUERY("SELECT id FROM `{!_MYSQL_PREFIX!}_refsystem` WHERE level=0", __FILE__, __LINE__);