Setting up LTSP to build a thin client system topic

I'm am trying to set up on Zorin 9 (Based on Ubuntu 14.04) but am having problems.

I've been following this How-to:

http://ubuntuforums.org/showthread.p...3#post13222023

I'm having problems with the second step.
sudo ltsp-build-client

I get this when running with --debug:

DEBUG: Loading plugin: configure: /usr/share/ltsp/plugins/ltsp-build-client/common/001-load-configuration-file
DEBUG: Loading plugin: configure: /usr/share/ltsp/plugins/ltsp-build-client/common/001-set-arch
DEBUG: Loading plugin: configure: /usr/share/ltsp/plugins/ltsp-build-client/common/001-set-exclude
DEBUG: Loading plugin: configure: /usr/share/ltsp/plugins/ltsp-build-client/common/010-etc-hosts
DEBUG: Loading plugin: configure: /usr/share/ltsp/plugins/ltsp-build-client/common/010-mount-proc
DEBUG: Loading plugin: configure: /usr/share/ltsp/plugins/ltsp-build-client/common/010-set-base
DEBUG: Loading plugin: configure: /usr/share/ltsp/plugins/ltsp-build-client/common/010-set-chroot
DEBUG: Loading plugin: configure: /usr/share/ltsp/plugins/ltsp-build-client/common/020-rootpath
DEBUG: Loading plugin: configure: /usr/share/ltsp/plugins/ltsp-build-client/common/030-update-sshkeys
DEBUG: Loading plugin: configure: /usr/share/ltsp/plugins/ltsp-build-client/common/035-update-kernels
DEBUG: Loading plugin: configure: /usr/share/ltsp/plugins/ltsp-build-client/common/091-unmount-dirs
DEBUG: Loading plugins in MODE=before-install:
DEBUG: Loading plugin: before-install: /usr/share/ltsp/plugins/ltsp-build-client/common/000-check-paths
DEBUG: Loading plugin: before-install: /usr/share/ltsp/plugins/ltsp-build-client/common/000-enable-debug
DEBUG: Loading plugin: before-install: /usr/share/ltsp/plugins/ltsp-build-client/common/001-load-configuration-file
DEBUG: Loading plugin: before-install: /usr/share/ltsp/plugins/ltsp-build-client/common/001-set-arch
DEBUG: Loading plugin: before-install: /usr/share/ltsp/plugins/ltsp-build-client/common/001-set-exclude
DEBUG: Loading plugin: before-install: /usr/share/ltsp/plugins/ltsp-build-client/common/010-etc-hosts
DEBUG: Loading plugin: before-install: /usr/share/ltsp/plugins/ltsp-build-client/common/010-mount-proc
DEBUG: Loading plugin: before-install: /usr/share/ltsp/plugins/ltsp-build-client/common/010-set-base
DEBUG: Loading plugin: before-install: /usr/share/ltsp/plugins/ltsp-build-client/common/010-set-chroot
DEBUG: Loading plugin: before-install: /usr/share/ltsp/plugins/ltsp-build-client/common/020-rootpath
DEBUG: Loading plugin: before-install: /usr/share/ltsp/plugins/ltsp-build-client/common/030-update-sshkeys
DEBUG: Loading plugin: before-install: /usr/share/ltsp/plugins/ltsp-build-client/common/035-update-kernels
DEBUG: Loading plugin: before-install: /usr/share/ltsp/plugins/ltsp-build-client/common/091-unmount-dirs
DEBUG: Loading plugins in MODE=install:
DEBUG: Loading plugin: install: /usr/share/ltsp/plugins/ltsp-build-client/common/000-check-paths
DEBUG: Loading plugin: install: /usr/share/ltsp/plugins/ltsp-build-client/common/000-enable-debug
DEBUG: Loading plugin: install: /usr/share/ltsp/plugins/ltsp-build-client/common/001-load-configuration-file
DEBUG: Loading plugin: install: /usr/share/ltsp/plugins/ltsp-build-client/common/001-set-arch
DEBUG: Loading plugin: install: /usr/share/ltsp/plugins/ltsp-build-client/common/001-set-exclude
DEBUG: Loading plugin: install: /usr/share/ltsp/plugins/ltsp-build-client/common/010-etc-hosts
DEBUG: Loading plugin: install: /usr/share/ltsp/plugins/ltsp-build-client/common/010-mount-proc
DEBUG: Loading plugin: install: /usr/share/ltsp/plugins/ltsp-build-client/common/010-set-base
DEBUG: Loading plugin: install: /usr/share/ltsp/plugins/ltsp-build-client/common/010-set-chroot
DEBUG: Loading plugin: install: /usr/share/ltsp/plugins/ltsp-build-client/common/020-rootpath
DEBUG: Loading plugin: install: /usr/share/ltsp/plugins/ltsp-build-client/common/030-update-sshkeys
DEBUG: Loading plugin: install: /usr/share/ltsp/plugins/ltsp-build-client/common/035-update-kernels
DEBUG: Loading plugin: install: /usr/share/ltsp/plugins/ltsp-build-client/common/091-unmount-dirs
DEBUG: Loading plugins in MODE=after-install:
DEBUG: Loading plugin: after-install: /usr/share/ltsp/plugins/ltsp-build-client/common/000-check-paths
DEBUG: Loading plugin: after-install: /usr/share/ltsp/plugins/ltsp-build-client/common/000-enable-debug
DEBUG: Loading plugin: after-install: /usr/share/ltsp/plugins/ltsp-build-client/common/001-load-configuration-file
DEBUG: Loading plugin: after-install: /usr/share/ltsp/plugins/ltsp-build-client/common/001-set-arch
DEBUG: Loading plugin: after-install: /usr/share/ltsp/plugins/ltsp-build-client/common/001-set-exclude
DEBUG: Loading plugin: after-install: /usr/share/ltsp/plugins/ltsp-build-client/common/010-etc-hosts
/usr/share/ltsp/plugins/ltsp-build-client/common/010-etc-hosts: line 3: /opt/ltsp/amd64/etc/hosts: No such file or directory
error: LTSP client installation ended abnormally

I have tried uninstalling ltsp-server and reinstalling. But the same error occurs.

Simply running the build client script again gives:

NOTE: Root directory /opt/ltsp/amd64 already exists, this will lead to problems, please remove it before trying again. Exiting.
error: LTSP client installation ended abnormally

Which when I do returns me to the original error as above.

Any advice?

Thank you