Nats allows you as the owner to display your own error messages should an error occur on any of the NATS pages.
To do so, create the file custom_errors.php in your /nats/ directory. This file can contain whatever message you wish to display on an error page.
<? echo "An error has occurred on this page, Sorry"; ?>
This will output the following:
A Problem has been Encountered
An error has occurred on this page, Sorry
Available variables for this page are:
$errstr -> The error that has occurred
$errfile -> The file where the error occurred
$errline -> The line number where the error occurred