a report of build.log

I have no idea why this script doesn´ t work.

build.log
Starting CD remastering on Mi 9 Aug 11:50:22 CEST 2006
Customization dir=/tmp/tmp.wCazwo
Mounting ISO image...
Mounting SquashFS image...
Copying data to remastering root directory...
Copying resolv.conf
Copying local apt cache, if available
Copying customization files...
Mounting X11 sockets directory to allow access from customization environment...Running customization script...
Get:1 http://archive.ubuntu.com dapper Release.gpg [189B]
Get:2 http://security.ubuntu.com dapper-security Release.gpg [189B]
Get:3 http://archive.ubuntu.com dapper Release [34.8kB]
Get:4 http://security.ubuntu.com dapper-security Release [30.9kB]
Get:5 http://archive.ubuntu.com dapper/main Packages [619kB]
Get:6 http://security.ubuntu.com dapper-security/main Packages [44.6kB]
Get:7 http://security.ubuntu.com dapper-security/restricted Packages [4275B]
Get:8 http://security.ubuntu.com dapper-security/main Sources [11.1kB]
Get:9 http://security.ubuntu.com dapper-security/restricted Sources [974B]
Get:10 http://archive.ubuntu.com dapper/restricted Packages [4571B]
Get:11 http://archive.ubuntu.com dapper/main Sources [255kB]
Get:12 http://archive.ubuntu.com dapper/restricted Sources [1478B]
Fetched 1008kB in 11s (90.1kB/s)
Reading package lists...
Installing language packs (ast
de)...
Reading package lists...
Building dependency tree...
E: Package language-pack-ast has no installation candidate
Package language-pack-ast is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
apt-get install language-pack-ast language-support-ast language-pack-gnome-ast language-pack-de language-support-de language-pack-gnome-de failed, error=100
Unmounting X11 sockets directory...
Running customization script failed, error=1
Trying to unmount X11 sockets directory (ignore errors)...
umount: /root/tmp/remaster-root/tmp/.X11-unix: not mounted
Trying to unmount directory /root/tmp/iso-source2 (ignore errors)...
umount: /root/tmp/iso-source2: not found
Trying to unmount directory /root/tmp/remaster-root/lib/modules/2.6.15-23-386/volatile (ignore errors)...
umount: /root/tmp/remaster-root/lib/modules/2.6.15-23-386/volatile: not mounted
Trying to unmount directory /root/tmp/remaster-root/proc (ignore errors)...
Trying to unmount directory /root/tmp/remaster-root/sys (ignore errors)...
Trying to unmount directory /root/tmp/remaster-root/dev/pts (ignore errors)...
umount: /root/tmp/remaster-root/dev/pts: not mounted
X Error: BadDevice, invalid or uninitialized input device 168
  Major opcode: 145
  Minor opcode: 3
  Resource id: 0x0
Failed to open device
X Error: BadDevice, invalid or uninitialized input device 168
  Major opcode: 145
  Minor opcode: 3
  Resource id: 0x0
Failed to open device
Session management error: Authentication Rejected, reason : None of the authentication protocols specified are supported and host-based authentication failed