MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.
The shin STL has a lot of non-manifold (incorrect) geometry (doesn't slice well with Simplify3D). I have run it through Meshmixer and made it solid. The file is here if you want to update yours: http://pat.net/misc/shin-fixed4.stl