Yes I have the theme installed correctly, because I want wegseln from Joomla to WordPress! Under the following address they can view it again:
www.top100fan.de/Unbenannt.JPG
The site that you've posted is a Joomla! one. I assume that this is the old one and that you want to "migrate" to Wordpress.
Could you post your WP site with your access details using Secure mode so we could take a closer look? To do that, click Reply or Full Reply and then click the Secure tab on top.