systray.py crashed with SIGSEGV in g_return_if_fail_warning()

Starting hplip via hplip-gui led to crash.

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: hplip-data 3.11.5-1ubuntu1
ProcVersionSignature: Ubuntu 3.0.0-4.5-generic-pae 3.0.0-rc6
Uname: Linux 3.0.0-4-generic-pae i686
NonfreeKernelModules: fglrx
Architecture: i386
Date: Mon Jul 11 20:55:16 2011
ExecutablePath: /usr/share/hplip/systray.py
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Alpha i386 (20110705.1)
InterpreterPath: /usr/bin/python2.7
Lpstat: Error: command ['lpstat', '-v'] failed with exit code 1: lpstat: No destinations added.
MachineType: LENOVO 0221A16
PackageArchitecture: all
Papersize: a4
ProcCmdline: python /usr/bin/hp-systray --force-startup
ProcEnviron:
 LANGUAGE=de_AT:de
 LANG=de_AT.UTF-8
 SHELL=/bin/bash
 LC_CTYPE=C
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-4-generic-pae root=UUID=da7f5b48-c7a7-486c-b2bf-8d4bceebee31 ro quiet splash vt.handoff=7
SegvAnalysis:
 Segfault happened at: 0x80dc8f4: mov 0x8(%eax),%eax
 PC (0x080dc8f4) ok
 source "0x8(%eax)" (0x00000008) not located in a known VMA region (needed readable region)!
 destination "%eax" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: hplip
StacktraceTop:
 g_return_if_fail_warning () from /lib/i386-linux-gnu/libglib-2.0.so.0
 gtk_widget_style_get () from /usr/lib/i386-linux-gnu/libgtk-x11-2.0.so.0
 QGtkStyle::pixelMetric(QStyle::PixelMetric, QStyleOption const*, QWidget const*) const () from /usr/lib/libQtGui.so.4
 QScrollBar::sizeHint() const () from /usr/lib/libQtGui.so.4
 QAbstractScrollAreaPrivate::layoutChildren() () from /usr/lib/libQtGui.so.4
Title: systray.py crashed with SIGSEGV in g_return_if_fail_warning()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
dmi.bios.date: 05/05/2011
dmi.bios.vendor: LENOVO
dmi.bios.version: 85ET39WW (1.12 )
dmi.board.name: 0221A16
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr85ET39WW(1.12):bd05/05/2011:svnLENOVO:pn0221A16:pvrThinkPadEdge:rvnLENOVO:rn0221A16:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 0221A16
dmi.product.version: ThinkPad Edge
dmi.sys.vendor: LENOVO