I have an existing gallery that did work. Each image is linked to a subdomain page and it has been working fine. No changes that I know of have been made recently. My client called and said that they are no longer working properly.
Gallery Page: http://www.gablesandgates.com/?p=893
Click on any head shot and you should see their listings page but you just see their head shot.
If you click on Susie Lash you should see this page: http://realestate.gablesandgates.com/idx/10314/bio.php?id=3SS
That is the link that I copied out of the gallery itself.