Index: branches/RC/core/kernel/utility/formatters/upload_formatter.php
===================================================================
diff -u -r10452 -r10579
--- branches/RC/core/kernel/utility/formatters/upload_formatter.php	(.../upload_formatter.php)	(revision 10452)
+++ branches/RC/core/kernel/utility/formatters/upload_formatter.php	(.../upload_formatter.php)	(revision 10579)
@@ -50,7 +50,11 @@
 //				$value['tmp_ids'] = implode('|', $n_ids);
 			}
 			if (!$value['tmp_ids']) {
-				return getArrayValue($value, 'upload');
+				$uploaded_files = getArrayValue($value, 'upload');
+				if (!$uploaded_files && getArrayValue($options, 'required')) {
+					$object->SetError($field_name, 'required');
+				}
+				return $uploaded_files;
 			}
 			$swf_uploaded_ids = explode('|', $value['tmp_ids']);
 			$swf_uploaded_names = explode('|', $value['tmp_names']);