problem using revisor in F12

["Germán A. Racca"]

Hello list,

I want to use revisor (in GUI mode) to create an optical live media of
F12, but before I've created a kickstart file using
system-config-kickstart to pass to revisor. Then, I run revisor using a
config file I've created including the F12-i386 repository. It preforms
several tasks from the list it displays

Resolve Dependencies - Done
Populating Statistics - Done
Downloading Packages - Done
Creating ext3 Filesystem - Done
Installing packages - Done
Configure System - Running...

and then it stays there indefinitely...looking at the console, it shows
the message available at the end of this mail.

This is the first time I use revisor and the kickstart creator.

Can anybody help me?

Regards,
Germán.

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This filesystem will be automatically checked every 38 mounts or
180 days, whichever comes first.  Use tune2fs -c or -i to override.
Tuning filesystem on /dev/loop0
tune2fs 1.41.9 (22-Aug-2009)
Setting maximal mount count to -1
Setting interval between checks to 0 seconds
Extending sparse file /var/tmp/revisor-rundir/tmp-/ext3fs.img to
4294967296
Mounting /dev/loop0 at /var/tmp/revisor
warning: setup-2.8.9-1.fc12.noarch: Header V3 RSA/SHA256 signature:
NOKEY, key ID 57bbccba
Traceback (most recent call last):
  File
"/usr/lib/python2.6/site-packages/revisor/modgui/ready_screen.py", line
144, in button_forward_clicked
    self.gui.next()
  File "/usr/lib/python2.6/site-packages/revisor/modgui/__init__.py",
line 447, in next
    self.default[self.current]['disp'](self)
  File "/usr/lib/python2.6/site-packages/revisor/modgui/__init__.py",
line 314, in displayBuildMedia
    self.BuildMedia.start()
  File "/usr/lib/python2.6/site-packages/revisor/modgui/build_media.py",
line 64, in start
    self.base.lift_off()
  File "/usr/lib/python2.6/site-packages/revisor/base.py", line 893, in
lift_off
    self.buildLiveMedia()
  File "/usr/lib/python2.6/site-packages/revisor/base.py", line 1729, in
buildLiveMedia
    liveImage.configure()
  File "/usr/lib/python2.6/site-packages/imgcreate/creator.py", line
731, in configure
    kickstart.RootPasswordConfig(self._instroot).apply(ksh.rootpw)
  File "/usr/lib/python2.6/site-packages/imgcreate/kickstart.py", line
218, in apply
    self.unset()
  File "/usr/lib/python2.6/site-packages/imgcreate/kickstart.py", line
193, in unset
    self.call(["/usr/bin/passwd", "-d", "root"])
  File "/usr/lib/python2.6/site-packages/imgcreate/kickstart.py", line
120, in call
    raise errors.KickstartError("Unable to run %s!" %(args))
imgcreate.errors.KickstartError/usr/lib/python2.6/site-packages/imgcreate/errors.py:40: DeprecationWarning: BaseException.message has been deprecated as of Python 2.6
  return str(self.message)
: Unable to run ['/usr/bin/passwd', '-d', 'root']!

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