problem with package plymouth

[Arne de Boer <arnedeboer22@yahoo.com>]

Hello all,
During build I get:
...
Setting up plymouth (0.8.3-9.1) ...
update-initramfs: deferring update (trigger activated)
Processing triggers for initramfs-tools ...
Processing triggers for menu ...
Errors were encountered while processing:
 linux-image-2.6.32-5-486
 linux-image-2.6-486
E: Sub-process /usr/bin/dpkg returned an error code (1)
P: Begin unmounting filesystems...
########################
my build script:
#!/bin/bash
lb clean

lb config -k 486 \
--architecture i386 \
-p minimal \
--memtest none \
--apt-recommends false \
--packages "xorg kpat khelpcenter4 fluxbox hdparm eterm net-tools chameleon-cursor-theme numlockx sudo sysvinit plymouth" \
--syslinux-splash /home/kpat/config/chroot_local-includes/boot/isolinux/2windows256.png \
--syslinux-timeout 1 \
--bootappend-live "boot=live noprompt toram nopersistent quiet silent quickreboot"

lb build
###################
removing plymouth from line --packages
does produce well.

Thanks!