NewSID fails on Windows Server 2008 R2

The title says it all. I’m currently building a virtual lab to test DirectAccess and every time I run newsid on windows server 2008 R2 the system bluescreens irrevocably on reboot. I’ve now switched to using sysprep to change the SID. Here’s hoping the sysinternals guys update what is undoubtedly one of the most useful tools around!