Попробуйте так:
Код:
;!@Install@!UTF-8!
Title="Установка Avira AntiVir Professional"
InstallPath="%windir%\\Temp\\Avira"
RunProgram="%windir%\\Temp\\Avira\\basic\\setup.exe /inf=\"%windir%\\Temp\\Avira\\setup.inf\""
RunProgram="taskkill /IM avscan.exe /F /T"
Delete="%windir%\\Temp\\Avira"
GUIMode="2"
;!@InstallEnd@!
