vbulletin style
 

If you log in as anonymous user can not see the style set
test w w w.vesparesources.com/gallery
The style appears only when logged in

Your gallery looks fine to me the style is there and I am a guest obviously since I do not have a login.

I am assuming you resolved your issue.

I applied the patch missed from your post: 146067-no-css-gallery-when-logged-out.html
But otherwise I'd rather fix since the first patch will skip the upgrade vBulletin

http://www.photopost.com/forum/1289451-post15.html

I assume you mean that. Yeah as stated vbulletin should append there forum url to the front of every link to a file in there program but they do not.