Try this…in auto-tag-setup.class.php replace
$args = array(
‘post_type’ => ‘post’,
‘post_status’ => ‘publish’,
);
with this
$args = array(
‘post_type’ => ‘post’,
‘post_status’ => ‘publish’,
‘numberposts’ => -1
);
Parameter “‘numberposts’ => -1” allows grabbing all posts available on the site. Hope it helps.