I had the same problem with the setup.exe. It is a problem with the config.txt and missing semicolons. It should look like ;!@Install@!UTF-8! RunProgram="StartX.exe /WAIT \"msiexec /i AdobeReader.msi /qb\"" ;!@InstallEnd@! I dont't know why, but browser seem to remove the spaces in the script. Try editing the ar.bat and insert spaces where I inserted underscores for the script to work: IF EXIST Empty.txt ECHO_;!@Install@!UTF-8!>>config.txt IF NOT EXIST Empty.txt ECHO_;!@Install@!UTF-8!>config.txt ECHO RunProgram="StartX.exe /WAIT \"msiexec /i %MsiName% /qb\"">>config.txt ECHO_;!@InstallEnd@!>>config.txt At least it worked for me and the german version. EDIT: Or just take the attached version from page 2