messed up export

I'm not sure what the problem is, but I have a character (rigged in Max) and
imported into MotionBuilder.  When I have and animation plotted to the
character, and go to export the animation (selecting the skeleton heiarchy and
selecting 'export') the mesh turns into a big blob.  Also, if I go from one
character to another character (using character input) and go to export it does
that too, making it hard to transfer animations from one character to another. 
Does anyone know what is the 
problem (most likely on the Max side) as to what is wrong here?  I have before
and after files as examples.

Thanks in advance!