problema con OS builder

[Kevin Mauricio Benavides Castro]

hola como esta a todos en la lista he podido descargar e instalar la version
del constructor 10.1.3 para la XO-1

pero bueno ahora tengo el siguiente problema cuando ejecuto olpc-os-builder
examples/olpc-os-10.1.3-xo-1.ini

me envia el siguiente mensaje adjunto el mensaje





-- 
Abrazoss..

One Laptop Per Child - http://wiki.laptop.org/go/User:Kevin.benavides
------------------------------------------------------------------------------
Voluntary sugarlabs
Implementation of SOAS
http://wiki.sugarlabs.org/go/User:Kevin.benavides
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[root at localhost olpc-os-builder-1.3.0]# olpc-os-builder olpc-os-10.1.3-xo1.ini
 * OLPC OS builder v3.0.0_pre2

WARNING: The build configuration you are using suggests that
olpc-os-builder version v1.3.0.x should be used.

You are using v3.0.0_pre2

Proceeding may result in a build that differs from what was intended by the 
provided configuration.

Press Ctrl+C to abort. Continuing in 15 seconds.

 * Running part prepare buildnr_from_file prepare.10.buildnr.sh...
 * Running part ksmain base ksmain.10.core.inc...
 * Running part ksmain adobe_flash ksmain.50.adobe.inc...
 * Running part ksmain repos ksmain.50.repos.py...
Reading repository information for http://mock.laptop.org/repos/local.10.1.3-xo1
Reading package information from http://mock.laptop.org/repos/local.10.1.3-xo1/repodata/primary.xml.gz
Reading repository information for http://mock.laptop.org/repos/local.10.1.3
Reading package information from http://mock.laptop.org/repos/local.10.1.3/repodata/primary.xml.gz
 * Running part ksmain base ksmain.50.timezone.sh...
 * Running part kspkglist base kspkglist.10.core.inc...
 * Running part kspkglist base kspkglist.11.olpcupdate.sh...
 * Running part kspkglist adobe_flash kspkglist.50.adobeflash.inc...
 * Running part kspkglist gnome kspkglist.50.gnome.inc...
 * Running part kspkglist sugar kspkglist.50.sugar.inc...
 * Running part kspkglist xo1 kspkglist.50.xo1.inc...
 * Running part kspkglist x11 kspkglist.60.misc.inc...
 * Running part kspost base kspost.10.core.inc...
 * Running part kspost base kspost.10.strip_locale.sh...
 * Running part kspost base kspost.10.version_number.sh...
 * Running part kspost adobe_flash kspost.50.adoberepo.inc...
 * Running part kspost powerd kspost.50.autosuspend.sh...
 * Running part kspost gnome kspost.50.batti.inc...
 * Running part kspost adobe_flash kspost.50.flashinstall.inc...
 * Running part kspost gnome kspost.50.gconf.inc...
 * Running part kspost sugar kspost.50.gconf.inc...
 * Running part kspost jffs2_image kspost.50.jffs2.inc...
 * Running part kspost sugar kspost.50.misc.inc...
 * Running part kspost xo1 kspost.50.xo1-tweaks.inc...
 * Running part kspost yumcfg kspost.50.yumcfg.py...
 * Running part kspost sugar kspost.51.favoritesview.sh...
 * Running part kspost x11 kspost.60.misc.inc...
 * Running part kspost sugar_activity_group kspost.60.nochroot.activities.py...
Traceback (most recent call last):
  File "/usr/share/olpc-os-builder/modules.d/sugar_activity_group/kspost.60.nochroot.activities.py", line 13, in <module>
    from bitfrost.update import microformat
  File "/usr/lib/python2.6/site-packages/bitfrost/update/__init__.py", line 5, in <module>
    from setup import perform_update, inhibit_suspend, check_signature
  File "/usr/lib/python2.6/site-packages/bitfrost/update/setup.py", line 11, in <module>
    from bitfrost.leases.keys import OS_KEYS, DEVELOPER_KEYS
  File "/usr/lib/python2.6/site-packages/bitfrost/leases/keys.py", line 52, in <module>
    raise Exception("OFW is not mounted, cannot read deployment keys")
Exception: OFW is not mounted, cannot read deployment keys
 * Caught error, cleanup and then bail out.
 * Running part cleanup base cleanup.50.cleanup.sh...
 * Running part cleanup buildnr_from_file cleanup.50.write_buildnr.sh...
ERROR: Failure in KspostStage: module sugar_activity_group, part kspost.60.nochroot.activities.py, error code 1