Sounds like a path issue
- Durring install you must change your path to the full URL.
The install will give you an option to edit the default skin / style of your forums. If you have multi-styles you will need to manual edit the others.
EX: DEFAULT
AdminCP => Styles & Templates => Style Manager => "Edit" Skin =>
Image Paths: Code:
Content visible to verified customers only.
Category Strips Code:
Content visible to verified customers only.
There are more calls to images in the style I just stoped.
-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
FULL URL
EX:
http://www.yoursite.com/forums Code:
Content visible to verified customers only.
Category Strips Code:
Content visible to verified customers only.