I figured out why there was a problem. When I copied the folders from the DVD, they all were copied over with Read-Only permission. Prior to running Win Integrator, I had unchecked the Read-Only box for the install folder and applied this to all of its contents. However, apparently this was not enough, as a few stubborn files still retained their Read-Only status. I had to manually go into each file, and check to see if it was Read-Only. The *.elg files were a few of the culprits. I am simply integrating an update pack I found over at WinCert (by George King). I'll check the technet articles and see what each hotfix does...but, as I haven't installed Windows 7 on my mainbox, I guess I can't really be sure of the issues it will have yet.Thanks for the response Edit: I wasn't even aware that KB1xxxxx and KB6xxxxx were test updates. I'll remove them from my slipstream. Again, thanks for the info!