need help max4live install

    Jan 16 2010 | 4:14 pm
    I just purchased max for live and got it authorized in live 8.1.1 on windows XP.
    When I launch the file "Max5_41439.exe" there is a windows installer pop up:
    "Windows ® Installer version 4.5.6001.22159
    msiexec /Option [Paramètre facultatif]
    Options d'installation [...]"
    (sorry it's in french) and the installation stops.
    I think it's asking me a command line ?
    How can I install max for live ?
    Can you help me ?