PHP Error in Footer Undefined index:

Hi
I started to get these error in the footer
Notice: Undefined index: route in /public_html/dev/system/storage/modification/catalog/view/theme/template/common/footer.tpl on line 3
And on Line 3 the footer contains the following
<?php
// if (is_object($this->request->get['route']) && $this->request->get['route'] == 'common/home'){
if (($_GET["route"] == NULL) || (isset($_GET["route"]) && $_GET["route"] == 'common/home')){
?>

I think so these error is related to the database as i tried to add the old database file(which i had as a backup ) and the error went . But if i change to the old database file all my new orders and new coustome registration will be effected any way i can backup all coustomer , product . categories , orders and then import the old database and re uppload the data

This error is caused by an installed OCMod extension. Contact the publisher of that extension. If you are not sure which one, uninstall each OCMod extension until this error disappears.