[Theme Horse Support Team]

You just create a functions.php file and first unhook the functions and then only edit the code.

for example to change the text of error page.

// Unhook default Thematic functions
function unhook_thematic_functions() {
// Don’t forget the position number if the original function has one

remove_action( ‘attitude_404_content’, ‘attitude_display_404_page_content’, 10 );

}
add_action(‘init’,’unhook_thematic_functions’); // removes the header content by using hook attitude_header

add_action( ‘attitude_404_content’, ‘attitude_child_display_404_page_content’, 10 );
/**
* function to show the footer info, copyright information
*/

function attitude_child_display_404_page_content() { ?>
<div id=”content”>
<header class=”entry-header”>
<h1 class=”entry-title”><?php _e( ‘Error 404-Page NOT Found’, ‘attitude’ ); ?></h1>
</header>
<div class=”entry-content clearfix” >
<p>Thank you</p>
</div><!– .entry-content –>
</div><!– #content –>
<?php
}

Or you may view the forum link too.

Thank you!