Facebook redirect loop

[weeder]

Hi There,

I am having problems utilising the vb4 facebook plugin

I have followed the instructions here http://www.vbulletin.com/docs/html/facebook_enable and still every single time I try and use the feature I am faced with a redirect loop, I am not sure what the problem could be whatsoever, has anyone else faced this issue as I am stumped.

my site is at www.scoot.ie (may currently be down due to dns propogation)

I am not sure whats up but any help would be greatly appreciated, if you need any more info from me just ask, I have uploaded some screenshots of my facebook app

Thanks

edit: Enable auto register is actually turned on, it it just turned off there for testing, Auto register is actually one of the only features I am interested in using.