Lightbox not working

If I disable vBSEO, the lightbox works as intended when users upload photos to a forum post. With vBSEO enabled, they just open up in their own page.

I read a few threads from late 2010 that indicated this was a known problem but was fixed. I just recently installed the forums so I have the latest build.

Any suggestions?

You appear to have attachments disabled for guests (clicking a picture takes me to a login prompt) so i cannot test.

Please either make attachments open for guests via the forum manager,
or open a ticket with a login account so we can login to see it in action

Do you see an image at http://www.equispot.com/horse-forums/first-post-5? I checked it while logged out and all it shows is a link to the photo. What page/image are you clicking on to get a login prompt?

Also, to speed things up, where do I enabled guest attachments?

Hmm, found the guest attachments permission, enabled it and now lightbox is working. Go figure. However, if you click on the image while the lightbox is active, it takes you to a page that displays only the image itself. Is that expected behavior?

Yes, that is supposed to happen if you click the image-- it loads full size in a new window.