VB Ad Management not displaying ads in arcade

I have the vB Ad Management setup on my site to display advertisements. It is working everywhere on my site except for in the arcade.

If I view the page source I can see that the ad management add-on is trying to put in the code but it's just shooting blanks...

PHP Code:

<div class="advertisement" align="center">

    <div id="navbar_adcode" class="adcode">
        
    </div>
</div> 

It is configured to show advertisements right under the navbar, and like I said it works everywhere else on the site, just not on the arcade pages. Seems like maybe there's a global variable missing or something.

I was able to edit the skin_arcade.php to manually insert the advertising code, but I wasn't able to figure out how to get it to not show ads for certain groups, so I'd prefer to get the vB Ad Management ads to appear in the arcade.

I'm also using vBAdvanced and my forum is under the /forum/ directory. You can see the website at http://www.brickjunkies.com.

Thanks for any help!

For the time being I'm manually inserting ads on the game page until I figure this out.