Re: Moodle 2.4.3 course backup error setting_invalid_ui_label

Ok, I've tracked down the issue to lines 141-146 of \backup\util\ui\backup_ui_setting.class.php:

public function set_label($label) {
    if ((string)$label === '' || $label !== clean_param($label, PARAM_TEXT)) {
       throw new base_setting_ui_exception('setting_invalid_ui_label');
    }
    $this->label = $label;
}

where 'clean_param($label, PARAM_TEXT)' is causing the issue.

I'll look for a tracker and if not one, raise one.