ubiquity crashed with AttributeError in do_set_property(): 'StateBox' object has no attribute 'label'

[Attila Hammer]

Dear Developers,

I downloaded latest Oneiric i386 desktop daily live cd from http://cdimage.ubuntu.com website, in the dayly directory/current directory.
I think the CD creation date is 2011-09-22.

Before I run Ubiquity installer from the desktop icon, I installed in live environment the latest updates. I want testing Ubiquity starts if all updates are installed or not, because lot of time I making custom testing CD with a11y related.
Before upgrades installation, Ubiquity GTK live installer starts correct. After Upbrades installation finished, Ubiquity GTK installer doesn't launched, and I experience this bug.

Reproducation steps:
1. Download for example latest awailable daily live cd, or the beta2 release.
2. Boot the wrote CD, or in the iso file with a virtual machine.
3. In the main screen, you choose "Try Ubuntu" possibility.
4. Verify Ubiquity installer launching correct if you clicking the Install Ubuntu 11.10 desktop icon.
5. Open a terminal with CTRL+ALT+T keystroke, and install all upgrades with sudo apt-get dist-upgrade command.
6. Verify again Ubiquity installer launching correct if you clicking the Install Ubuntu 11.10 desktop icon. If you reproduced this bug, the installer will be not launch, and the /var/crash directory will be created the Ubiquity related crash file.

Attila

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: ubiquity 2.7.35
ProcVersionSignature: Ubuntu 3.0.0-11.18-generic 3.0.4
Uname: Linux 3.0.0-11-generic i686
ApportVersion: 1.23-0ubuntu1
Architecture: i386
CasperVersion: 1.284
Date: Mon Sep 26 05:29:36 2011
ExecutablePath: /usr/lib/ubiquity/bin/ubiquity
InterpreterPath: /usr/bin/python2.7
LiveMediaBuild: Ubuntu 11.10 "Oneiric Ocelot" - Beta i386 (20110921.2)
ProcCmdline: /usr/bin/python /usr/lib/ubiquity/bin/ubiquity gtk_ui
ProcEnviron: Error: [Errno 13] Permission denied: '/proc/14703/environ'
PythonArgs: ['/usr/lib/ubiquity/bin/ubiquity', 'gtk_ui']
SourcePackage: ubiquity
Title: ubiquity crashed with AttributeError in do_set_property(): 'StateBox' object has no attribute 'label'
Traceback:
 Traceback (most recent call last):
   File "/usr/lib/ubiquity/ubiquity/gtkwidgets.py", line 309, in do_set_property
     self.label.set_text(value)
 AttributeError: 'StateBox' object has no attribute 'label'
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make Ubuntu better. This particular crash has already been reported and is a duplicate of bug #856669, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.