Ok i have had this problem since like 1.2 I could never get an nlited version of my copy of x64 Pro. I awlays get the same type of error, but with different files. I get the "The following line in the .SIF file used my setup is corrupt or missing:" with most of the time value 0. http://img345.imageshack.us/img345/3875/dscn0177re7.jpg This would also happen with other files, the one in the pic happened with cabarc.exe, but it has happened with a bunch of others as well, and it always happens within the "sourcediskfiles" I have like 30 coasters . Now I use virtual machine. I talked to Kamil a while back (creator of the x64 update pack) and he said it had to do with Nlite. I never had this type of problem with my copy of x86 Pro. What I did notice is this. With x64 I cannot disable the SFC which is what I think is the problem. Its driving me insane this problem . I have spent countless hours. Please some one help me. I have not been able to get even 1 good copy of an Nlited x64. p.s. i am currently using the latest nlite, 1.3RC