dglidden - sorry for the late reply!
Sure enough, I just ran sysprep and have the exact same issue. It's late now and QA isn't around, but I've written them to see if there are known compatibility issues with sysprep, or potential switches that need to be run with aswImgPr that we're missing out on.
Michael (alan1998) - Yes, I'm at avast HQ, but I'm not paid to answer these forums, but since nobody is, and help has been scarce, I'm chiming in.
With that being said, if you don't think I'm qualified, you're totally welcome to report my posts to a moderator or answer the questions yourself.