cross domain login not working with ultimate facebook

When logging into a mapped domain using ultimate facebook, I am not logged into the rest of the network.

When logging into a mapped domain using standard login, i am logged into the rest of the network.

I am using Domain mapping and ultimate facebook.

For example when logging into vgradionetwork.com i am not logged into thedrkshow.com (thedrkshow.vgradionetwork.com) and vise versa while using the ultimate facebook login.

The opposite is true when using the standard login.

Any suggestions?