Ultimate Facebook - Photo Uploader

Hi,

I'm having some trouble with the Ultimate Facebook plugin. When logged in as network administrator, I'm able to use the facebook photo dialog on the post edit screen. However, when I log in to any network subsite and authenticate with my facebook account, I can see the icon for "add FB photo" and click it to open the dialog, but the dialog is just blank. Nothing loads in the window.

I've tried authenticating with a couple of different facebook accounts, but no luck. Any ideas?

Thanks, Gabe