I think he changed the material names for the textures, see here:
http://code.google.com/p/bmx3d/source/detail?r=71 (/trunk/max3d/max3d/modelutil.cpp)
DiffuseMap is now DiffuseTexture
SpecularMap is now SpecularTexture
EmissiveMap is now EmissiveTexture
NormalMap is now NormalTexture
How are you setting your textures?
http://code.google.com/p/bmx3d/source/detail?r=71 (/trunk/max3d/max3d/modelutil.cpp)
DiffuseMap is now DiffuseTexture
SpecularMap is now SpecularTexture
EmissiveMap is now EmissiveTexture
NormalMap is now NormalTexture
How are you setting your textures?