MoXa, what version of nLite are you using and where did it come from? What OS are you running nLite under? If you are testing on VM (a great idea, BTW), please post a screen shot of the error message. Is SETUPREH.HIV missing or not loadable, as in Ponch's link? I am curious why you are using nLite to only create an ISO? How big is your ISO? Perhaps you should try ImgBurn - what I use. Enjoy, John. Hello Johnc, - nLite v1.4.9.1 - OS where I use nLite: Windows 7 Pro x86 I also used a Server 2003 VM to create the ISO, but the same issue - screenshot will follow - the file is not loadable - for the moment I create ISOs to check them in my VM server. when I need them I burn them - size if ISO will follow I'll check Ponch's thread and will see how far I come thanks for the moment.