Ultimate Facebook : Register issue after updating to 1.6 Version

Hello,

After updation of ultimate facebook plugin, it is not working properly.When i am trying to login through ultimate facebook widget login button , I am unable to login or it' freeze.

Some time when i entered email id and password, it show my facebook account and show my site application for permission for allow or don't allow. If i clicked on it , it show blank screen and not process.

Just try with your facebook account or test facebook account here : http://blog.fansfoot.com/

Please advise

Lamine