Unable to get Twitter Login page in 5.6.1

Hi,

I'm trying to login to geometrixx-outdoors via Twitter. Whenever I clicked on "Login via Twitter" button from geometrixx-outdoors home page's sign in component, I'm getting popup window with some errors. I'm using out of the box Twitter configuration only. For facebook I didn't get any errors. I'm able to login via facebook. Please help in this.  Please let me know if you are also facing the same problem. Your comments are welcome.

Thanks,

Aarya.