crash during 64 bit install

[Geoffrey Burd]

installing latest mythbuntu 64 bit

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: Fri May 2 06:22:37 2014
InstallCmdLine: file=/cdrom/preseed/mythbuntu.seed boot=casper cdrom-detect/try-usb=true persistent noprompt floppy.allowed_drive_mask=0 ignore_uuid initrd=/casper/initrd.lz quiet splash -- maybe-ubiquity
LiveMediaBuild: Mythbuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
ProcEnviron:
 LANGUAGE=en_CA.UTF-8
 TERM=linux
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_CA.UTF-8
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

[Ubuntu Foundations Team Bug Bot (crichton)]

Exception during installation:
May 2 10:22:25 mythbuntu /plugininstall.py: Traceback (most recent call last):
May 2 10:22:25 mythbuntu /plugininstall.py: File "/usr/share/ubiquity/plugininstall.py", line 1770, in <module>
May 2 10:22:25 mythbuntu /plugininstall.py: install.run()
May 2 10:22:25 mythbuntu /plugininstall.py: File "/usr/share/ubiquity/plugininstall.py", line 78, in wrapper
May 2 10:22:25 mythbuntu /plugininstall.py: func(self)
May 2 10:22:25 mythbuntu /plugininstall.py: File "/usr/share/ubiquity/plugininstall.py", line 204, in run
May 2 10:22:25 mythbuntu /plugininstall.py: self.configure_plugins()
May 2 10:22:25 mythbuntu /plugininstall.py: File "/usr/share/ubiquity/plugininstall.py", line 570, in configure_plugins
May 2 10:22:25 mythbuntu /plugininstall.py: self.run_plugin(plugin)
May 2 10:22:25 mythbuntu /plugininstall.py: File "/usr/share/ubiquity/plugininstall.py", line 544, in run_plugin
May 2 10:22:25 mythbuntu /plugininstall.py: ret = inst.install(self.target, PluginProgress(self.db))
May 2 10:22:25 mythbuntu /plugininstall.py: File "/usr/lib/ubiquity/plugins/myth-install-type.py", line 198, in install
May 2 10:22:25 mythbuntu /plugininstall.py: self.setup_roles()
May 2 10:22:25 mythbuntu /plugininstall.py: File "/usr/lib/ubiquity/plugins/myth-install-type.py", line 178, in setup_roles
May 2 10:22:25 mythbuntu /plugininstall.py: vnc.create_password(passwd)
May 2 10:22:25 mythbuntu /plugininstall.py: File "/usr/lib/python3/dist-packages/mythbuntu_common/vnc.py", line 58, in create_password
May 2 10:22:25 mythbuntu /plugininstall.py: raise ValueError('Password should be passed as bytes')
May 2 10:22:25 mythbuntu /plugininstall.py: ValueError: Password should be passed as bytes
May 2 10:22:25 mythbuntu /plugininstall.py: