Oops
that is kloxo official file, forgot KloxoMR uses new directories and copies things to new locations.
Follow these instructions.
SSH:
cp /home/kloxo/httpd/default/inc.php /home/kloxo/httpd/default/custom-inc.php
vim /home/kloxo/httpd/default/custom-inc.php
Edit custom-inc.php to what you want,
it will not get over written on update.Be sure to set the owner of the custom-inc.php properly.
chown apache:apache /home/kloxo/httpd/default/custom-inc.php