After imaging a PC with GSS 2.5.1 system reboot do hardware detection then I finaly got this error message:
"Windows setup encountered an internal error while loading or searching for unattended answer file"
I have enable Configuration in my Ghost Console Task to change computer name join domain.
If I only push the image with Ghostcast everythigns works fine and sysprep finalyse my installation without any error.
I am using windows 7 x64 enterprise on a dell optiplex 760.