Error in Export import tool for opencart 2.0--Please help!!

I am facing this error whenever i click on System>tools>export/import it takes me to admin interface saying invalid token!
MOD: Export/Import Tool for OpenCart 2.0.x
FILE: admin/controller/common/menu.php
CODE: $data['text_backup'] = $this->language->get('text_backup');
LINE: 13
CODE: $data['backup'] = $this->url->link('tool/backup', 'token=' . $this->session->data['token'], 'SSL');
NOT FOUND!
FILE: admin/language/en-gb/common/menu.php
CODE: $_['text_backup'] = 'Backup / Restore';
LINE: 10
FILE: admin/view/template/common/menu.tpl
CODE: <li><a href="<?php echo $backup; ?>"><?php echo $text_backup; ?></a></li>
LINE: 164

Please Check!!