I've changed the following:
In /admin/modules/cron_simulator.php
Line 33
Replace "require $scriptsArray['file_name'];"
With
" $ch = curl_init();
curl_setopt($ch, CURLOPT_URL,"".$scriptsArray['file_name']."");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_exec($ch);
curl_close ($ch);
"
And now works for files outside the folder "admin", using the absolute path of the file (eg http://www.yourdomain.com/../file.php) in the "File Name" field. Hope that helps.