Different colors usually denote different normal orientation.
So the "black" part as viewed in Meshlab is inside out.
For a proper model definition all normals should point to the outside.
In this case the Meshmedic subtracts the inside out portion from your models in an attempt to fix it.
I tried fixing reorienting the normals in Meshlab, but it did not work.
Also ran it through Netfabb cloud but it also cuts out the inverted part.
Perhaps you can manually fix it by selectin only the wrong part and do an invert normals.
Cheers,
Stijn
Last edited: Aug 17, 2011