ubiquity crashed with SystemError in resolve()

Binary package hint: ubiquity

Started installer from live image on dove platform. Clicked on "Update Installer".

ProblemType: Crash
Architecture: armel
Date: Wed Mar 17 17:30:44 2010
DistroRelease: Ubuntu 10.04
ExecutablePath: /usr/lib/ubiquity/bin/ubiquity
InterpreterPath: /usr/bin/python2.6
LiveMediaBuild: Ubuntu-Netbook 10.04 "Lucid Lynx" - Beta armel+dove (20100317)
Package: ubiquity 2.2.3
ProcCmdline: /usr/bin/python /usr/lib/ubiquity/bin/ubiquity gtk_ui
ProcEnviron: Error: [Errno 13] Permission denied: '/proc/2595/environ'
ProcVersionSignature: Ubuntu 2.6.32-202.13-dove
PythonArgs: ['/usr/lib/ubiquity/bin/ubiquity', 'gtk_ui']
SourcePackage: ubiquity
Title: ubiquity crashed with SystemError in resolve()
Uname: Linux 2.6.32-202-dove armv7l
UserGroups: