Can't install MythBuntu

[Max]

installation will always fail on the same instance

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubiquity 2.18.7
ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
Uname: Linux 3.13.0-24-generic x86_64
ApportVersion: 2.14.1-0ubuntu3
Architecture: amd64
CasperVersion: 1.340
Date: Sat Jun 7 01:00:58 2014
InstallCmdLine: bootkbd=us console-setup/layoutcode=en_US console-setup/variantcode=nodeadkeys locale=us_us persistent noprompt cdrom-detect/try-usb=true file=/cdrom/preseed/mythbuntu.seed boot=casper initrd=/casper/initrd.lz splash -- maybe-ubiquity
LiveMediaBuild: Mythbuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
ProcEnviron:
 LANGUAGE=es_AR.UTF-8
 TERM=linux
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=es_AR.UTF-8
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)
UpstartUbiquity:
 debconf: DbDriver "templatedb": /var/cache/debconf/templates.dat is locked by another process: Resource temporarily unavailable

[Ubuntu Foundations Team Bug Bot (crichton)]

Exception during installation:
Jun 7 01:58:24 mythbuntu /plugininstall.py: Traceback (most recent call last):
Jun 7 01:58:24 mythbuntu /plugininstall.py: File "/usr/share/ubiquity/plugininstall.py", line 1770, in <module>
Jun 7 01:58:24 mythbuntu /plugininstall.py: install.run()
Jun 7 01:58:24 mythbuntu /plugininstall.py: File "/usr/share/ubiquity/plugininstall.py", line 78, in wrapper
Jun 7 01:58:24 mythbuntu /plugininstall.py: func(self)
Jun 7 01:58:24 mythbuntu /plugininstall.py: File "/usr/share/ubiquity/plugininstall.py", line 204, in run
Jun 7 01:58:24 mythbuntu /plugininstall.py: self.configure_plugins()
Jun 7 01:58:24 mythbuntu /plugininstall.py: File "/usr/share/ubiquity/plugininstall.py", line 570, in configure_plugins
Jun 7 01:58:24 mythbuntu /plugininstall.py: self.run_plugin(plugin)
Jun 7 01:58:24 mythbuntu /plugininstall.py: File "/usr/share/ubiquity/plugininstall.py", line 544, in run_plugin
Jun 7 01:58:24 mythbuntu /plugininstall.py: ret = inst.install(self.target, PluginProgress(self.db))
Jun 7 01:58:24 mythbuntu /plugininstall.py: File "/usr/lib/ubiquity/plugins/myth-install-type.py", line 198, in install
Jun 7 01:58:24 mythbuntu /plugininstall.py: self.setup_roles()
Jun 7 01:58:24 mythbuntu /plugininstall.py: File "/usr/lib/ubiquity/plugins/myth-install-type.py", line 178, in setup_roles
Jun 7 01:58:24 mythbuntu /plugininstall.py: vnc.create_password(passwd)
Jun 7 01:58:24 mythbuntu /plugininstall.py: File "/usr/lib/python3/dist-packages/mythbuntu_common/vnc.py", line 58, in create_password
Jun 7 01:58:24 mythbuntu /plugininstall.py: raise ValueError('Password should be passed as bytes')
Jun 7 01:58:24 mythbuntu /plugininstall.py: ValueError: Password should be passed as bytes
Jun 7 01:58:24 mythbuntu /plugininstall.py:

[Ubuntu Foundations Team Bug Bot (crichton)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 1290460, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.
[This is an automated message. I apologize if it reached you inappropriately; please just reply to this message indicating so.]