Package fails to install cleanly

[zobelhelas]

When trying to install the package (after I fixed the depedency to yubikey-personalization) I get the following error:

zobel@kvasir:~/projects/debian/packages% sudo dpkg -i ykfde_1_all.deb
Selecting previously unselected package ykfde.
(Reading database ... 193049 files and directories currently installed.)
Unpacking ykfde (from ykfde_1_all.deb) ...
Setting up ykfde (1) ...
update-initramfs: deferring update (trigger activated)
Processing triggers for initramfs-tools ...
update-initramfs: Generating /boot/initrd.img-3.2.0-2-amd64
cp: cannot stat `/boot/yubikey-challenge': No such file or directory
E: /usr/share/initramfs-tools/hooks/ykfde failed with return 1.
update-initramfs: failed for /boot/initrd.img-3.2.0-2-amd64 with 1.
dpkg: error processing initramfs-tools (--install):
 subprocess installed post-installation script returned error exit status 1
Errors were encountered while processing:
 initramfs-tools