Hello,
If you have some problem exporting to Max, maybe it's because of the Max 7 avi file handling bug. See topics http://forum.realviz.com/viewtopic.php?t=1747 or
http://forum.realviz.com/viewtopic.php?t=1774 for details
But first, you need to check that the scene if perfect within matchmover. Green tracks are not enough, you need to be sure that you have some tracks covering all the 3D space where you'll add cg elements (not all the tracks in the foreground for example), and that your tracks are long enough.