ubiquity crashed with AttributeError in debconffilter_done()

[dei]

Binary package hint: ubiquity

Installer crash during install of 10.10 Beta from the x86 DVD:

I replaced /bin/mount by a script which mounts / with the btrfs compress option (formated it to btrfs of course). In the Timezone selection dialog i was brought back to the format dialog by an error message (/ couldnt be mounted).

After a reverse of my mount script i clicked forward and then the error message appeared and crashed the installer (It didnt close, Im simply caught in the partitioning dialog and quit doesnt work)

I was happy the installer was that stable and expected the intstall to continue / rebegin normally, but nope...

TEST CASE
1. Boot from a Live media
2. At Ubiquity click on 'Try Ubuntu' and start a live session
4. Start ubiquity
5. Click on 'Continue' then quickly click on 'Quit' on the main dialog then 'Quit' on the confirmation dialog before the UI switches to step 'Prepare'

ACTUAL RESULT
This crash

ProblemType: Crash
DistroRelease: Ubuntu 10.10
Package: ubiquity 2.3.13
ProcVersionSignature: Ubuntu 2.6.35-19.28-generic 2.6.35.3
Uname: Linux 2.6.35-19-generic i686
Architecture: i386
Date: Fri Sep 3 09:37:06 2010
ExecutablePath: /usr/lib/ubiquity/bin/ubiquity
InterpreterPath: /usr/bin/python2.6
LiveMediaBuild: Ubuntu 10.10 "Maverick Meerkat" - Beta i386 (20100901.1)
ProcCmdline: /usr/bin/python /usr/lib/ubiquity/bin/ubiquity gtk_ui
ProcEnviron: Error: [Errno 13] Permission denied: '/proc/3112/environ'
PythonArgs: ['/usr/lib/ubiquity/bin/ubiquity', 'gtk_ui']
SourcePackage: ubiquity
Title: ubiquity crashed with AttributeError in debconffilter_done()
UserGroups:

[Jean-Baptiste Lallement (jibel)]

I've reproduced this issue with ubiquity 2.9.30 when trying to reproduce bug 792652

[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.]