I have used earlier versions of nlite without problems. however I installed 1.4.5 final and it stopped me. I copied, as usual, my windows instal disks (mce) into a folder and started nlite. I was informed that nlite only works on instal disks and not on installed o/s. It stopped responding. I removed 1.4.5 final and put on 1.4.1 ,which I used last time ok, it still won't let me in Any ideas?? ------------------------------------------------- 1.4.1 on another machine, installed in feb 08, works ok........... although it does warn about installed o/s it does process the slipstream.