If you need to reinstall the default DirectAdmin skin Enhanced you can use this code:
rm -f /usr/local/directadmin/data/skins/enhanced cd /usr/local/directadmin/data/skins/ mkdir -p enhanced wget http://files.directadmin.com/services/all/enhanced.tar.gz tar -xzf enhanced.tar.gz
After this code the enhanced skin will be updated and be default again. Please not that you update DirectAdmin before reinstalling (and updating) the default Enhanced skin.