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.
You might want to try contacting the designer of that thing. I just tried those params in openscad and it fails saying "WARNING: Object may not be a valid 2-manifold and may need repair!" Granted Customizer could use better error handling so that it says that in the output. :)