well the only problem I can see.. is your forum home url..
you have http:// www. talkaircraft.com /forum.php
and that somehow sets itself in front of the categories and images also...
Make sure you have the right path to gallery AND gallery images in the vbgallery settings in your control panel.!!!
Because when I click one of your categories.. it gives me: http:// www. talkaircraft.com /forum.php / category/
but that looks more like a vbseo
issue... make sure you adapted the .htaccess file to the new forumpath!!!!