Kickstart fails with "AttributeError: 'NoneType' object has no attribute 'size'"

Issue

• Kickstart from Satellite fails with "AttributeError: 'NoneType' object has no attribute 'size'" . The base kickstart file is copied from an anaconda-ks.cfg created by first installing the OS via DVD on the system.

• The disk layout copied directly from the DVD build:
  -----------------------------------------------------
  part /boot --fstype ext3 --onpart sda1
  part swap --onpart sdb1
  part pv.4 --noformat --onpart sda2

  volgroup OS_dg --pesize=32768 pv.4

       -------------------------------------------------------