max4live requires live 8.2.2 or later and max5.1.8 or later. 8.2.8 and 5.1.9 highly recommended. the only way max4live will work with max6 is 1) you already have live8/max5/max4live installed and registered on your system and also then a full copy of max6 which you switch the live preferences to reference, 2) wait until live9 is released.
and actually after all that, things may be messed up, so you will probably have to go to /Max/support/LivePacks/MaxForLiveContent.alp and double-click to install content. but make sure you do not do that until after m4l addon is registered with your ableton serials.