I have the same problem here..
I created a facebook app and then pasted the App ID and App secret to phoca gallery.
After that, when I click "Connect with facebook", it just redirect to my facebook account.
So I have no Idea that to fill "Facebook User Settings" as it is appear below.
Facebook User Settings
2. User ID
3. Base Domain
5. Session Key
6. Access Token
8. Fan Page ID
How should I fill it? I read phoca gallery instructions and there is nothing as filling the above fields.
And I cannot understand a bit, which means by "Base domain, Secret, Session Key, Access Token, Signature".
It would be glade if you can help me.