system-config-lvm crashes with "TypeError: unpack non-sequence"

Issue

• traceback error when trying to run system-config-lvm:

  # system-config-lvm
  Traceback (most recent call last):
    File "/usr/sbin/system-config-lvm", line 173, in ?
      runFullGUI()
    File "/usr/sbin/system-config-lvm", line 158, in runFullGUI
      blvm = baselvm(glade_xml, app)
    File "/usr/sbin/system-config-lvm", line 108, in __init__
      self.volume_tab_view = Volume_Tab_View(glade_xml, self.lvmm, self.main_win)
    File "/usr/share/system-config-lvm/Volume_Tab_View.py", line 133, in __init__
      self.prepare_tree()
    File "/usr/share/system-config-lvm/Volume_Tab_View.py", line 214, in prepare_tree
      self.model_factory.reload()
    File "/usr/share/system-config-lvm/lvm_model.py", line 164, in reload
      self.__PVs = self.__query_partitions()
    File "/usr/share/system-config-lvm/lvm_model.py", line 275, in __query_partitions
      pv.setPartition(old_pv.getPartition())
    File "/usr/share/system-config-lvm/PhysicalVolume.py", line 135, in setPartition
      def setPartition(self, (devname, part)):
  TypeError: unpack non-sequence