dpkg: error processing console-setup caused installer crash on Edgy (=Ubiquity 1.2.5)

Here's the partman log to the installation error

Here's the syslog to the installation error

Extracting hopefully useful info from syslog:
Nov 7 09:55:51 nubuntu ubiquity: Setting up console-setup (1.7ubuntu19) ...
Nov 7 09:55:52 nubuntu ubiquity: /usr/share/debconf/confmodule: line 42: 3: Bad file descriptor
Nov 7 09:55:52 nubuntu ubiquity: dpkg: error processing console-setup (--configure):
Nov 7 09:55:52 nubuntu ubiquity: subprocess post-installation script returned error exit status 1
Nov 7 09:55:52 nubuntu ubiquity: dpkg: dependency problems prevent configuration of console-tools:
Nov 7 09:55:52 nubuntu ubiquity: console-tools depends on console-setup | console-common; however:
Nov 7 09:55:52 nubuntu ubiquity: Package console-setup is not configured yet.
Nov 7 09:55:52 nubuntu ubiquity: Package console-common is not installed.
Nov 7 09:55:52 nubuntu ubiquity: dpkg: error processing console-tools (--configure):
Nov 7 09:55:52 nubuntu ubiquity: dependency problems - leaving unconfigured
Nov 7 09:55:52 nubuntu ubiquity: Errors were encountered while processing:
Nov 7 09:55:52 nubuntu ubiquity: console-setup
Nov 7 09:55:52 nubuntu ubiquity: console-tools
Nov 7 09:55:52 nubuntu ubiquity: E: Sub-process /usr/bin/dpkg returned an error code (1)
Nov 7 09:55:52 nubuntu grub-installer: info: Calling 'apt-install grub' failed
Nov 7 09:57:55 nubuntu dhclient: DHCPREQUEST on eth0 to 192.168.213.254 port 67
Nov 7 09:57:55 nubuntu dhclient: DHCPACK from 192.168.213.254
Nov 7 09:57:57 nubuntu dhclient: bound to 192.168.213.136 -- renewal in 844 seconds.

Thank you for taking the time to report this bug and helping to make Ubuntu better.
We are confirming this bug as attached files seems to contain relevant info.

I'm not familiar with nUbuntu, which you seem to be installing, and so it's difficult for me to support this.

However, the problem here seems to be that console-setup isn't in the read-only file system on the live CD, and so ubiquity has to install it in a context where it isn't quite prepared to do so. In Hardy, this should be fixed because ubiquity will instead queue it for installation and install it when it actually is ready:

ubiquity (1.7.7) hardy; urgency=low

[...]
  [ Colin Watson ]
  * Prevent apt-install from installing packages directly unless
    install_extras has been run (previously, it would do so once apt was
    configured, which produced some confusing error messages).
[...]

 -- Evan Dandrea <email address hidden> Wed, 13 Feb 2008 15:03:15 -0500