ubiquity crashed with KeyError in build_passphrase_cache(): '802-11-wireless-security'

[Michele Olivo]

I have Started the installation from a live (USB-Key) xubuntu image (downloaded today) and the error occurred.

ProblemType: Crash
DistroRelease: Ubuntu 13.04
Package: ubiquity 2.13.17 [modified: lib/partman/automatically_partition/question]
ProcVersionSignature: Ubuntu 3.8.0-14.24-generic 3.8.4
Uname: Linux 3.8.0-14-generic i686
ApportVersion: 2.9.2-0ubuntu4
Architecture: i386
CasperVersion: 1.330
Date: Wed Mar 27 09:09:04 2013
ExecutablePath: /usr/lib/ubiquity/bin/ubiquity
InstallCmdLine: file=/cdrom/preseed/xubuntu.seed boot=casper initrd=/casper/initrd.lz quiet splash -- maybe-ubiquity
InterpreterPath: /usr/bin/python3.3
LiveMediaBuild: Xubuntu 13.04 "Raring Ringtail" - Alpha i386 (20130326)
MarkForUpload: True
ProcCmdline: /usr/bin/python3 /usr/lib/ubiquity/bin/ubiquity gtk_ui
ProcEnviron: Error: [Errno 13] Permission denied: '/proc/7068/environ'
PythonArgs: ['/usr/lib/ubiquity/bin/ubiquity', 'gtk_ui']
SourcePackage: ubiquity
Title: ubiquity crashed with KeyError in build_passphrase_cache(): '802-11-wireless-security'
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

[Marcus Tomlinson (marcustomlinson)]

This release of Ubuntu is no longer receiving maintenance updates. If this is still an issue on a maintained version of Ubuntu please let us know.

[Launchpad Janitor (janitor)]

[Expired for ubiquity (Ubuntu) because there has been no activity for 60 days.]