system-config-printer-kde crashes with AttributeError: 'QString' object has no attribute 'rfind'

Binary package hint: kdeadmin

Trying to open it I get:

$ kcmshell4 system-config-printer-kde
kcmshell(19456)/python (plugin): Error while running factory function for Python plugin: "system-config-printer-kde/system-config-printer-kde.py"
Traceback (most recent call last):
  File "<string>", line 18, in kpythonpluginfactory_bridge
  File "/usr/share/kde4/apps/system-config-printer-kde/system-config-printer-kde.py", line 4004, in CreatePlugin
    kcm = u.makeui(component_data, widget_parent)
  File "/usr/share/kde4/apps/system-config-printer-kde/system-config-printer-kde.py", line 128, in makeui
    self.ui = PyKcm(component_data, parent, self)
  File "/usr/share/kde4/apps/system-config-printer-kde/system-config-printer-kde.py", line 104, in __init__
    uic.loadUi(APPDIR + "/" + "system-config-printer.ui", self)
  File "/usr/lib/pymodules/python2.6/PyQt4/uic/__init__.py", line 177, in loadUi
    return DynamicUILoader().loadUi(uifile, baseinstance)
  File "/usr/lib/pymodules/python2.6/PyQt4/uic/Loader/loader.py", line 24, in loadUi
    return self.parse(filename, os.path.dirname(filename))
  File "/usr/lib/python2.6/posixpath.py", line 119, in dirname
    i = p.rfind('/') + 1
AttributeError: 'QString' object has no attribute 'rfind'
kcmshell(19456)/python (plugin): Failed to import module
kcmshell(19456)/kcontrol KCModuleLoader::loadModule: This module has no valid entry symbol at all. The reason could be that it's still using K_EXPORT_COMPONENT_FACTORY with a custom X-KDE-FactoryName which is not supported anymore

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: system-config-printer-kde 4:4.4.92-0ubuntu2
ProcVersionSignature: Ubuntu 2.6.35-9.14-generic 2.6.35-rc5
Uname: Linux 2.6.35-9-generic x86_64
NonfreeKernelModules: nls_iso8859_1 nls_cp437 usb_storage lzo lzo_compress btrfs zlib_deflate crc32c libcrc32c ufs qnx4 hfsplus hfs minix ntfs vfat msdos fat jfs xfs reiserfs aesni_intel cryptd aes_x86_64 aes_generic binfmt_misc rfcomm sco parport_pc bridge stp ppdev bnep l2cap kvm_intel kvm nfsd exportfs nfs lockd fscache nfs_acl auth_rpcgss dm_crypt sunrpc snd_hda_codec_nvhdmi snd_hda_codec_conexant arc4 thinkpad_acpi snd_hda_intel snd_hda_codec nvidia snd_seq_midi snd_rawmidi snd_seq_midi_event iwlagn snd_hwdep tp_smapi thinkpad_ec snd_seq snd_seq_device joydev snd_pcm iwlcore uvcvideo snd_timer mac80211 tpm_tis videodev v4l1_compat v4l2_compat_ioctl32 snd soundcore cfg80211 tpm lp btusb psmouse bluetooth tpm_bios nvram snd_page_alloc serio_raw parport usbhid hid ahci intel_agp e1000e video output firewire_ohci firewire_core crc_itu_t sdhci_pci sdhci led_class libahci vga16fb vgastate
Architecture: amd64
Date: Fri Jul 30 14:04:37 2010
InstallationMedia: Kubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100427.1)
PackageArchitecture: all
ProcEnviron:
 SHELL=/bin/bash
 PATH=(custom, user)
 LANG=en_US.UTF-8
 LANGUAGE=en_US.UTF-8
SourcePackage: kdeadmin