Comment 2 for bug 1312475

Exception during installation:
Apr 24 23:37:15 ubuntu-gnome /plugininstall.py: Traceback (most recent call last):
Apr 24 23:37:15 ubuntu-gnome /plugininstall.py: File "/usr/share/ubiquity/plugininstall.py", line 1770, in <module>
Apr 24 23:37:15 ubuntu-gnome /plugininstall.py: install.run()
Apr 24 23:37:15 ubuntu-gnome /plugininstall.py: File "/usr/share/ubiquity/plugininstall.py", line 78, in wrapper
Apr 24 23:37:15 ubuntu-gnome /plugininstall.py: func(self)
Apr 24 23:37:15 ubuntu-gnome /plugininstall.py: File "/usr/share/ubiquity/plugininstall.py", line 241, in run
Apr 24 23:37:15 ubuntu-gnome /plugininstall.py: self.configure_bootloader()
Apr 24 23:37:15 ubuntu-gnome /plugininstall.py: File "/usr/share/ubiquity/plugininstall.py", line 1026, in configure_bootloader
Apr 24 23:37:15 ubuntu-gnome /plugininstall.py: "GrubInstaller failed with code %d" % ret)
Apr 24 23:37:15 ubuntu-gnome /plugininstall.py: ubiquity.install_misc.InstallStepError: GrubInstaller failed with code 1
Apr 24 23:37:15 ubuntu-gnome /plugininstall.py: