I have bt4 updated and installed on my laptop. I downloaded the iso and renamed to bt4.iso and followed along with the video and this was the outcome.
Code:
root@bt:~/BUILD# ./bt4-customise.sh
##############################################################[*] BackTrack 4 (pre)Final customisation script[*] Setting up the build environment...
bt4-pre-final.iso: No such file or directory
mnt/casper/filesystem.squashfs: No such file or directory[*] Copying over files, please wait ...
cp: cannot stat `squashfs/*': No such file or directory
cp: cannot create regular file `edit/etc/': Is a directory
cp: cannot create regular file `edit/etc/': Is a directory
cp: cannot create regular file `edit/etc/': Is a directory
cp: cannot create regular file `edit/etc/': Is a directory
mount: mount point edit/dev does not exist
mount: mount point edit/proc does not exist
##############################################################[*] Entering livecd.
##############################################################[*] Now you can modify the LiveCD. At minimum, we recommend :[*] apt-get update && apt-get upgrade & apt-get clean
##############################################################[*] If you are running a large update, you might need to stop[*] services like crond, udev, cups, etc in the chroot[*] services like crond, udev, cups, etc in the chroot[*] before exiting your chroot environment.
##############################################################[*] Once you have finished your modifications, type "exit"
##############################################################
chroot: cannot run command `/bin/bash': No such file or directory[*] Exited the build environemnt, unmounting images.
umount: edit/dev: not found
umount: edit/proc: not found
umount: squashfs: not mounted
umount: mnt: not mounted
chmod: cannot access `extract-cd/casper/filesystem.manifest': No such file or directory[*] Building manifest
./bt4-customise.sh: line 60: extract-cd/casper/filesystem.manifest: No such file or directory
chroot: cannot run command `update-rc.d': No such file or directory
chroot: cannot run command `update-rc.d': No such file or directory
chroot: cannot run command `update-rc.d': No such file or directory
chroot: cannot run command `update-rc.d': No such file or directory
chroot: cannot run command `update-rc.d': No such file or directory
chroot: cannot run command `update-rc.d': No such file or directory
chroot: cannot run command `update-rc.d': No such file or directory
chroot: cannot run command `update-rc.d': No such file or directory
chroot: cannot run command `update-rc.d': No such file or directory
chroot: cannot run command `update-rc.d': No such file or directory
chroot: cannot run command `update-rc.d': No such file or directory
chroot: cannot run command `update-rc.d': No such file or directory
chroot: cannot run command `update-rc.d': No such file or directory
chroot: cannot run command `update-rc.d': No such file or directory
chroot: cannot run command `update-rc.d': No such file or directory
chroot: cannot run command `update-rc.d': No such file or directory
chroot: cannot run command `update-rc.d': No such file or directory
chroot: cannot run command `update-rc.d': No such file or directory
chroot: cannot run command `update-rc.d': No such file or directory
chroot: cannot run command `update-rc.d': No such file or directory
chroot: cannot run command `update-rc.d': No such file or directory
chroot: cannot run command `update-rc.d': No such file or directory
chroot: cannot run command `update-rc.d': No such file or directory
sed: can't read extract-cd/casper/filesystem.manifest-desktop: No such file or directory
sed: can't read extract-cd/casper/filesystem.manifest-desktop: No such file or directory
sed: can't read extract-cd/casper/filesystem.manifest-desktop: No such file or directory
sed: can't read extract-cd/casper/filesystem.manifest-desktop: No such file or directory
sed: can't read extract-cd/casper/filesystem.manifest-desktop: No such file or directory
sed: can't read extract-cd/casper/filesystem.manifest-desktop: No such file or directory
sed: can't read extract-cd/casper/filesystem.manifest-desktop: No such file or directory
sed: can't read extract-cd/casper/filesystem.manifest-desktop: No such file or directory
cp: cannot stat `extract-cd/casper/filesystem.manifest': No such file or directory
sed: can't read extract-cd/casper/filesystem.manifest-desktop: No such file or directory[*] Building squashfs image...
Could not create destination file: No such file or directory[*] Creating iso ...
I: -input-charset not specified, using utf-8 (detected in locale settings)
genisoimage: Uh oh, I cant find the boot image 'boot/grub/stage2_eltorito' ![*] Your modified BT4 is in /root/BUILD/bt4-mod.iso
##############################################################
root@bt:~/BUILD#
Ok I think I see in posting this. It's looking for the pre final name which I missed due to massive scrolling in terminal.
bt4-pre-final.iso: No such file or directory
Works a hell of a lot better after changing it to the right file name
sorry for the confusion.