I had the same problem and found a solution.
1. Open “[Wordpress Root]/wp-content/plugins/smallerik-file-browser/wpfib.php”
2. Go to line 135 and:
Find:
$wpfib_baselink = site_url().DS.”?p=”.get_the_ID();
Replace:
$wpfib_baselink = “?p=”.get_the_ID();
This will allow directory links to work from any page or sub-page.
