@agray Antivirus products sometimes cause trouble when installed before sysprep I believe.
For example: Bitdefender has a page about it
Symantec is the same, there even is a program that you have to run in order to reset everything for sysprep to work.
@agray I cant seem to find your response into what the log files say. Did you check them? Or have I just not seen it and its in the thread somewhere?