systray.py crashed with SIGSEGV in do_warn.29144()

[Blümchen Blau]

Crashed when changing the theme in MyUnity from Ambiance to Abiance-Blue

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: hplip-data 3.12.2-1ubuntu2
ProcVersionSignature: Ubuntu 3.2.0-20.32-generic-pae 3.2.12
Uname: Linux 3.2.0-20-generic-pae i686
ApportVersion: 1.95-0ubuntu1
Architecture: i386
Date: Fri Mar 23 18:42:50 2012
ExecutablePath: /usr/share/hplip/systray.py
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha i386 (20120201.2)
InterpreterPath: /usr/bin/python2.7
MachineType: LENOVO 42914CG
PackageArchitecture: all
Papersize: a4
ProcCmdline: /usr/bin/python /usr/bin/hp-systray
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.2.0-20-generic-pae root=/dev/mapper/PQMC--12--VolGrp-System ro quiet splash vt.handoff=7
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: hplip
Title: systray.py crashed with SIGSEGV in g_type_module_use()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin nvram plugdev sambashare sudo vboxusers
dmi.bios.date: 02/14/2012
dmi.bios.vendor: LENOVO
dmi.bios.version: 8DET58WW (1.28 )
dmi.board.asset.tag: Not Available
dmi.board.name: 42914CG
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:bvr8DET58WW(1.28):bd02/14/2012:svnLENOVO:pn42914CG:pvrThinkPadX220:rvnLENOVO:rn42914CG:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 42914CG
dmi.product.version: ThinkPad X220
dmi.sys.vendor: LENOVO

[Apport retracing service (apport)]

StacktraceTop:
 do_warn.29144 ()
 PyErr_WarnEx ()
 _log_func (log_domain=0xb466eefb <Address 0xb466eefb out of bounds>, log_level=G_LOG_LEVEL_WARNING, message=0x91970a0 "Im Modulpfad \302\273pixmap\302\253 konnte keine Themen-Engine gefunden werden,", user_data=0x8f917e4) at /build/buildd/pygobject-2-2.28.6/gobject/gobjectmodule.c:2353
 ?? ()
 ?? ()