Have noticed that in recent versions of ArchBang Zen-installer script fails. It seems that when I uncomment servers in local script the world wide mirrors (first in list) are used. These servers do not seem fully up to date and script fails as it cannot find certain required libraries.
Future releases will force user to edit mirrorlist and use local mirrors, this should solve the problem and zif is loaded and runs as normal.
Below find code changes to zen-installer
sudo sed -i 's/^#Server/Server/' /etc/pacman.d/mirrorlist
# add this line below
sudo lxterminal -e nano /etc/pacman.d/mirrorlist
# comment out line below
#sudo sed -i 's/^#Server/Server/' /etc/pacman.d/mirrorlist