Help the material manager

I am a graphic designer/animator and I think that the material manager script will help me tremendously, but it doesn't work right on my system. I have a 64 bit system with Max 2010 64 bit. When I open it says (--Unkown property: "count" in undefined). After that it shows the Loading Materials floater, but nothing ever happens. Does anyone know how to fix this? Thanks in Advance