This failure is most commonly associated with a mismatch between the version of SystemImager you used to create your image and the version of SystemImager you used to create the corresponding .master script.
As of SystemImager 2.0, SystemConfigurator is used to make final configuration changes to an image. SystemConfigurator is executed from within the image, so it must be installed within the image on the image server. To insure this, SystemConfigurator must be installed on any golden client before an image is pulled from it. If you have images that were pulled from golden clients that did not have SystemConfigurator installed, you can install SystemConfigurator directly into the image on the imagserver. Are you using a pre 1.0 version of SystemImager? If so, please upgrade.
Example 6-1. Installing SystemConfigurator into an Image on an Image Serer
Download the latest SystemConfigurator package for your system from http://sourceforge.net/projects/systemconfig.
Copy the SystemConfigurator package into your image directory. For example:
# cp systemconfigurator-1.10-1.noarch.rpm /var/lib/systemimager/images/my_image/tmp
Chroot into the image directory and install the package.
# chroot /var/lib/systemimager/images/my_image bash
# rpm -Uvh /tmp/systemconfigurator-1.10-1.noarch.rpm
# exit