Missed a call to _saveFileToDisk() that needs to use the new return value.

application/modules/requests/models/RequestModel.php

@@ -684,7 +684,7 @@ class Requests_RequestModel extends Unl_Model
     		if (!$file['data']) {
     			continue;
     		}
-    		self::_saveFileToDisk($file['data']);
+    		$file['hash'] = self::_saveFileToDisk($file['data']);
     		$file['data'] = '';
     	}
     	return array_keys(get_object_vars($this));