}
// If the user has submitted something add some related links and data
- if ($submission->data2 == 'submitted') {
+ if (isset($submission->data2) AND $submission->data2 == 'submitted') {
// Add a view link to the settings nav
$link = new moodle_url('/mod/assignment/view.php', array('id'=>$this->cm->id));
$node->add(get_string('viewmysubmission', 'assignment'), $link, navigation_node::TYPE_SETTING);