I'm not using a trial, this is the released stuff that we purchased a month ago. I'm not using the old unattend.xml. I created completely new one using w7e toolkit, and edited those points of interest as before using the toolkit. The new toolkit verified the file and reported no errors. Finally, as I said, when I run sysprep it fails verification. Looks like a bug to me, I have no other explanation. You should be contacting your Embedded Partner. Usually your MS Rep or where you bought the Embedded kit from can tell you which Embedded Partner to contact. They have the best information on how to use the product.