[Master] Installation failed: The installer encountered an unrecoverable error

[Dimitri John Ledkov]

Upon booting, ubiquity does not start, and instead a popup "Installation failed" appears.

Clicking OK, launching full desktop and starting ubiquity from there works and you can proceed with the installation.

Debug logs attached.

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: ubiquity 2.11.31
ProcVersionSignature: Ubuntu 3.5.0-14.15-generic 3.5.3
Uname: Linux 3.5.0-14-generic x86_64
ApportVersion: 2.5.1-0ubuntu7
Architecture: amd64
CasperVersion: 1.322
Date: Mon Sep 10 08:50:58 2012
InstallCmdLine: file=/cdrom/preseed/ubuntu.seed boot=casper only-ubiquity initrd=/casper/initrd.lz quiet splash -- debug-ubiquity maybe-ubiquity
LiveMediaBuild: Ubuntu 12.10 "Quantal Quetzal" - Alpha amd64 (20120909)
ProcEnviron:
 TERM=linux
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)