This error has been ongoing for awhile for us as well. We're using an nLited XP SP3 image via RIS without sysprep. The following two server-side changes allowed the RIS installation to proceed without user intervention : 1] Create the c:\sysprep\i386 folder and put the above-listed files in it. The full UNC for the folder should be : "\\server\reminst\setup\language\images\image name\i386\mirror1\userdata\sysprep\i386" (swap "language" and "image name" for your specifics). 2] Change two lines in the RIPREP.SIF file associated with the image as follows : [unattended] OemPreinstall = Yes InstallFilesPath = c:\sysprep\i386 Restart WDS/RIS and you are good to go. Thanks to everyone here for the help in resolving this. I don't have to keep checking back on workstations during imaging again!