Snow won't play multiple parts simultaneously

    Hi,


    Having a problem with my Virus TI Snow.
    For some reason it won't play multiple parts simultaneously.
    For instance, in Part 1, I have a pad sound that plays a sustained chord.
    Then when I program in notes for Part 2, Part 1 will stop playing as soon as these notes in Part 2 are triggered.


    Havent used my Virus for a while, but it never used to happen before it was updated to OS 3.1.0.


    Also - it only seems to occur when all parts play chords or at least more than one note simultaneously.



    Any ideas what I am doing wrong here?
    Thanks



    btw - i'm on a PC with Win XP using Ableton 8
    The problem occurs when I am routing all parts through the same output, and also when routing the parts through different outputs.