registration notifacation

[scruffydog]

Having trouble with new user registration requiring email notifacation. When a new user registers they receive the account activation email, when the activation link is clicked on it goes to a blank page and the new user does not get activated. I have serched through the threads and cant find the answer to this so would be gratefull if anyone can shed some light on this.
www,kapsgallery,info

[Nibbler]

You have Coppermine set to a theme that you have deleted. Put the classic theme back.

[Joachim Müller]

Actual link is http://www.kapsgallery.info/