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.
I had the exact same problem. What fixed it for me was using the 32-bit version of OpenSCAD (2015.03-2) instead of the 64-bit version. The development snapshot had the same problem so use the 2015.03-2 version.