Installer crash after setting a boot partition (while installing)

[David Edmundson]

This is a MacBook Pro 7.1 machine. Installer shows one partition as "biosgrub" so I left it as such. I installed the bootloader to /dev/sda, then it copied all the files and crashed while setting up the bootloader.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubiquity 2.17.10
ProcVersionSignature: Ubuntu 3.13.0-19.40-generic 3.13.6
Uname: Linux 3.13.0-19-generic x86_64
ApportVersion: 2.13.3-0ubuntu1
Architecture: amd64
CasperVersion: 1.339
CurrentDesktop: KDE
Date: Fri Mar 28 17:33:34 2014
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/kubuntu.seed boot=casper maybe-ubiquity quiet splash --
LiveMediaBuild: Kubuntu 14.04 LTS "Trusty Tahr" - Beta amd64 (20140326.2)
SourcePackage: grub-installer
UpgradeStatus: No upgrade log present (probably fresh install)

[Dimitri John Ledkov (xnox)]

Exception caught in process_line:
Traceback (most recent call last):
  File "/usr/lib/ubiquity/ubiquity/filteredcommand.py", line 145, in process_line
    return self.dbfilter.process_line()
  File "/usr/lib/ubiquity/ubiquity/debconffilter.py", line 287, in process_line
    if not input_widgets[0].run(priority, question):
  File "/usr/lib/ubiquity/ubiquity/components/plugininstall.py", line 83, in run
    response = self.frontend.bootloader_dialog(current_device)
AttributeError: 'Wizard' object has no attribute 'bootloader_dialog'

[Dimitri John Ledkov (xnox)]

Are you installing with LVM enabled? Note that at the moment that is broken on Trusty images.