E: /usr/share/initramfs-tools/hooks/udev_era failed with return 1.
update-initramfs: failed for /boot/initrd.img-3.10-4.slh.3-aptosid-amd64 with 1.dpkg: error processing initramfs-tools (--configure):
 subprocess installed post-installation script returned error exit status 1
Errors were encountered while processing:
 initramfs-tools
E: Sub-process /usr/bin/dpkg returned an error code (1)

$infobash -v
Host/Kernel/OS  "Obelix" running Linux 3.10-4.slh.3-aptosid-amd64 x86_64 [ aptosid 2011-02 Ἡμέρα - kde-lite - (201107131633) ]
CPU Info        4x Intel Core i5-2400 @ clocked at [ 2976.000 MHz ]
Videocard       NVIDIA GF108 [GeForce GT 440]  X.Org 1.12.4  [ 1280x1024@60.0hz ]
Processes 232 | Uptime 4days | Memory 1455.8/7969.4MB | HDD Size 500GB (52%used) | GLX Renderer GeForce GT 440/PCIe/SSE2 | GLX Version 4.3.0 NVIDIA 325.15 | Client Shell | Infobash v3.46

$ dpkg -S /usr/share/initramfs-tools/hooks/udev_era
dpkg-query: no path found matching pattern /usr/share/initramfs-tools/hooks/udev_era
$ ls -l /usr/share/initramfs-tools/hooks/
total 88
-rwxr-xr-x 1 root root   378 Jul 29  2011 busybox
-rwxr-xr-x 1 root root  1015 Jun 28 12:14 cryptgnupg
-rwxr-xr-x 1 root root   452 Jun 28 12:14 cryptkeyctl
-rwxr-xr-x 1 root root  1569 Jun 28 12:14 cryptopenct
-rwxr-xr-x 1 root root  1510 Jun 28 12:14 cryptopensc
-rwxr-xr-x 1 root root   913 Jun 28 12:14 cryptpassdev
-rwxr-xr-x 1 root root 13042 Jun 28 12:14 cryptroot
-rwxr-xr-x 1 root root   472 Oct 12  2009 dmsetup
-rwxr-xr-x 1 root root   230 Mar 10  2013 fuse
-rwxr-xr-x 1 root root  1299 Oct  6  2012 keymap
-rwxr-xr-x 1 root root   686 Sep 21  2012 klibc
-rwxr-xr-x 1 root root   355 Apr  7 19:10 kmod
-rwxr-xr-x 1 root root   762 Oct  8  2009 lvm2
-rwxr-xr-x 1 root root  7313 Jan 24  2013 mdadm
-rwxr-xr-x 1 root root   426 Mar 10  2013 ntfs_3g
-rwxr-xr-x 1 root root  1275 Dec  6  2010 thermal
-rwxr-xr-x 1 root root  2030 Sep 12 00:25 udev
-rwxr-xr-x 1 root root  1987 Feb 13  2012 udev_era

$ cat /usr/share/initramfs-tools/hooks/udev_era
#!/bin/sh -e

PREREQS=""

prereqs() { echo "$PREREQS"; }

case "$1" in
    prereqs)
    prereqs
    exit 0
    ;;
esac

root_over_the_network() {
  if   egrep -qs '^/dev/(nbd|nd[a-z]|etherd/e)[^[:space:]]+[[:space:]]+/[[:space:]]' /etc/fstab; then
    return 0
  elif egrep -qs '^[^[:space:]#]+[[:space:]]+/[[:space:]]+nfs[234]?[[:space:]]' /etc/fstab; then
    return 0
  fi
  return 1 # false
}

. /usr/share/initramfs-tools/hook-functions

# udevd uses unix domain sockets for communication
force_load unix

copy_exec /sbin/udevd      /sbin
copy_exec /sbin/udevadm    /sbin

mkdir -p $DESTDIR/etc/udev
cp -p /etc/udev/udev.conf $DESTDIR/etc/udev/

mkdir -p $DESTDIR/lib/udev/rules.d/
for rules in 50-udev-default.rules 60-persistent-storage.rules \
        80-drivers.rules 91-permissions.rules \
        64-md-raid.rules 60-persistent-storage-lvm.rules \
        55-dm.rules 60-persistent-storage-dm.rules; do
  if   [ -e /etc/udev/rules.d/$rules ]; then
    cp -p /etc/udev/rules.d/$rules $DESTDIR/lib/udev/rules.d/
  elif [ -e /lib/udev/rules.d/$rules ]; then
    cp -p /lib/udev/rules.d/$rules $DESTDIR/lib/udev/rules.d/
  fi
done

# try to autodetect the value of this configuration option
if [ -z "$NEED_PERSISTENT_NET" ] && root_over_the_network; then
  NEED_PERSISTENT_NET='yes'
fi

# Copy the rules for persistent network interface names for the benefit of
# systems which need to boot over the network. If this is enabled then the
# initramfs must be rebuilt every time a new network interface is added.
# See #414287 for details.
case "$NEED_PERSISTENT_NET" in
YES|yes|Yes|Y|y)
  if [ -e /etc/udev/rules.d/70-persistent-net.rules ]; then
    cp -p /etc/udev/rules.d/70-persistent-net.rules $DESTDIR/lib/udev/rules.d/
  fi
  ;;
esac

cp /lib/udev/hotplug.functions $DESTDIR/lib/udev/
for program in firmware.agent ata_id edd_id scsi_id; do
  copy_exec /lib/udev/$program /lib/udev
done
copy_exec /sbin/blkid /sbin

if [ -x /lib/udev/vio_type ]; then
  copy_exec /lib/udev/vio_type /lib/udev
fi