Hi there! I have a problem with missing files on nLite'd WinXP CD.. Version Professional, SP1-SP2 slipstreamed manually to original contents. nLite additions: Hotfixes till July 06, nVidia 91.47 Eng WHQL integrated, components removed. Error description: on Upgrade installation form within XP - missing file a863ydiq.sys with option to skip it and note of its probable necessity. Then comes reboot, installation fails almost instantly on black screen file check due to a863ydiq.sys missing, the only option - reboot and repeat the same Tried on my second computer, just for experiment - same stuff, different file missing - at3w92pf.sys. Just to clarify: IMHO those files are random, randomly named to be precise, because they're NOWWHERE to be found on my PC's and XP CD's (looked in *.cab's too), I couldn't even google them! Looked through discussions about missing files on the forum - not exactly my case I don't have any "known" files missing, valuable drivers, themes, Outlook, unsigned drivers, corrupt driver.cab or expand.exe, crapy CD-Rs, crapy recorders, read/write errors, etc.. Used nLite 1.2RC, 3 days ago on WinXP Pro SP2. Tried several times, although with the same config, unfortunately don't have much time to test Looking forward for help Thanks ahead. P.S. Config attached LAST_SESSION.INI