Index: trunk/core/kernel/db/dblist.php
===================================================================
diff -u -N -r8428 -r8605
--- trunk/core/kernel/db/dblist.php	(.../dblist.php)	(revision 8428)
+++ trunk/core/kernel/db/dblist.php	(.../dblist.php)	(revision 8605)
@@ -610,7 +610,8 @@
 	function AddOrderField($field, $direction = 'asc', $is_expression = false)
 	{
 		// original multilanguage field - convert to current lang field
-		if (getArrayValue($this->Fields, $field, 'formatter') == 'kMultiLanguage' && !getArrayValue($this->Fields, $field, 'master_field')) {
+		$formatter = isset($this->Fields[$field]['formatter']) ? $this->Fields[$field]['formatter'] : false;
+		if ($formatter == 'kMultiLanguage' && !isset($this->Fields[$field]['master_field'])) {
 			$lang = $this->Application->GetVar('m_lang');
 			$field = 'l'.$lang.'_'.$field;
 		}