Index: branches/RC/core/kernel/db/dbitem.php
===================================================================
diff -u -r10576 -r10794
--- branches/RC/core/kernel/db/dbitem.php	(.../dbitem.php)	(revision 10576)
+++ branches/RC/core/kernel/db/dbitem.php	(.../dbitem.php)	(revision 10794)
@@ -835,14 +835,22 @@
 		$lang_count = $ml_helper->getLanguageCount();
 		foreach ($this->Fields as $field => $options)
 		{
+			// master field is set only for CURRENT language
 			if (isset($options['formatter']) && $options['formatter'] == 'kMultiLanguage' && isset($options['master_field'])) {
 				if (preg_match('/^l([0-9]+)_(.*)/', $field, $regs)) {
 					$l = $regs[1];
 					$name = $regs[2];
-					unset($options['required']); // all non-primary language field set to non-required
-					for ($i=1; $i<=$lang_count; $i++) {
+					// MuliLanguage formatter sets error_field to master_field, but in PopulateMlFields mode, we display ML fields directly
+					// so we set it back to itself, otherwise error will not be displayed
+					$this->Fields['l' . $l . '_' . $name]['error_field'] = 'l' . $l . '_' . $name;
+					for ($i = 1; $i <= $lang_count; $i++) {
 						if ($i == $l || !$ml_helper->LanguageFound($i)) continue;
-						$this->Fields['l'.$i.'_'.$name] = $options;
+						$f_options = $options;
+						$f_options['error_field'] = 'l' . $i . '_' . $name;  // set error field back to itself - see comment above
+						if ($i != $this->Application->GetDefaultLanguageId()) {
+							unset($f_options['required']); // all non-primary language field set to non-required
+						}
+						$this->Fields['l' . $i . '_' . $name] = $f_options;
 					}
 				}
 			}