Hi Ricktendo, Thanks for you great work. I downloaded dotNetFx451_Full_LDR_x86_x64_Slim.exe and extract them. Edited the config.txt (unused language packs removed), and add some languages pack what I need and compress them with 7z and dragged into the batch file as described in the manual/help file. When it was complete, I tested the installer on a clean system, but I get a message "7-Zip: Unsupported method", this is maybe that I use an older or a newer version of 7zip? Is the 7zsd.sfx modified? From what version is 7zsd.sfx build?