Each line must have a unique number! QUOTE: REG ADD %KEY%\015 /VE /D "Alcohol 120%" /f >> %windir%\apps.log REG ADD %KEY%\015 /v 1 /D "%systemdrive%\install\Applications\Alcohol\setup.exe /qn" /f >> %windir%\apps.log SHOULD BE: REG ADD %KEY%\015 /VE /D "Alcohol 120%" /f >> %windir%\apps.log REG ADD %KEY%\016 /v 1 /D "%systemdrive%\install\Applications\Alcohol\setup.exe /qn" /f >> %windir%\apps.log If you duplicate numbers chaos ensues...