I am quite impressed with this tool, it will come in very handy and I thank you for your time and effort. I only have to correct two issues in order to get it to work for me. I may be doing something wrong or leaving something out that is required. I don't install BTS drivers, I leave the directory blank. Same with the Custom folder, I leave it empty as well. I am using RVM_Integrator_1.0.exe with RVMUpdatePack2.0.0.cab. 1. I have to change sp2.cab reference in txtsetup.sif of RIS_Install from sp2.cat to sp2.cab. 2. I have to run the following commands post-install inorder to get Windows Update to work. Error Code: 0x800A01AE: regsvr32 wuapi.dll regsvr32 wuaueng.dll regsvr32 wuaueng1.dll regsvr32 wucltui.dll regsvr32 wups.dll regsvr32 wups2.dll regsvr32 wuweb.dll Has there been any success using other tools, such as nLite, with your script?