no need for ds label
@ -313,7 +313,6 @@ function islandora_datastream_version_replace_form_submit($form, &$form_state) {
$file = file_load($form_state['values']['file']);
try {
$ds = $object[$form_state['dsid']];
$ds->label = $form_state['values']['label'];
$ds->mimetype = $file->filemime;
$path = drupal_realpath($file->uri);
$ds->setContentFromFile($path);