Hi,
i have found solution how to fix 1.0.28 and 1.0.29 (just tested 0.29) navt plugin:
1) Chmod 777 navt folder
2) Edit file 'js/navtadmin.js.php'
On the top you should have:
if(!defined('ABSPATH')) {
define('ABSPATH', $_SERVER['DOCUMENT_ROOT'] . '/');
}
Replace it with this:
if(!defined('ABSPATH')) {
define('ABSPATH', dirname(dirname(dirname(dirname(dirname(__FILE__))))).'/');
}
It helped me. Maybe it will be ok also for you.