Traceback (most recent call first):
  File "/usr/lib/anaconda/partedUtils.py", line 188, in get_partition_drive
    return "%s" %(partition.geom.dev.path[5:])
  File "/usr/lib/anaconda/fsset.py", line 1396, in setActive
    drive = partedUtils.get_partition_drive(part)
  File "/usr/lib/anaconda/packages.py", line 143, in turnOnFilesystems
    anaconda.id.fsset.setActive(anaconda.id.diskset)
  File "/usr/lib/anaconda/dispatch.py", line 203, in moveStep
    rc = stepFunc(self.anaconda)
  File "/usr/lib/anaconda/dispatch.py", line 126, in gotoNext
    self.moveStep()
  File "/usr/lib/anaconda/gui.py", line 1047, in nextClicked
    self.anaconda.dispatch.gotoNext()
  File "/usr/lib/anaconda/iw/progress_gui.py", line 67, in renderCallback
    self.intf.icw.nextClicked()
  File "/usr/lib/anaconda/gui.py", line 1074, in handleRenderCallback
    self.currentWindow.renderCallback()
AttributeError: 'NoneType' object has no attribute 'geom'

Local variables in innermost frame:
partition: None

Version-Release number of selected component (if applicable):
anaconda-11.3.0.14-1.x86_64 (20070731 rawhide)

How reproducible:
Haven't tried again on this box.  Other boxes that didn't have /boot
on raid installed successfully.