@schakan Chain install is working fine. I told you to re-create it. Use "Delete all" button and then add again chained install. You don't need to do service pack and hotfix slipstream again, just do this with chained install. Now, if you do a hotfix slipstream, then chained install needs to be added after slipstream is finished. Adding chained install don't depends on button "Start". As soon as you press button "Add" chain install is added. So, after you finish slipstream, then add chain install. This is necessary to do after slipstream because original SETUP.exe is moved to FILES/SETUP folder and other path is used, and because you added chain before slipstream (when original SETUP.exe was in root folder) path will become wrong after original SETUP.exe is moved to mentioned folder. I'll try implement some check for this so Slipstreamer automatically correct the path. Cheers