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.
Sorry to hear you are having issues with this... to date over 15,000 people have downloaded and printed this with very few reported issues. However, I checked all the files in my Mesh Checker and no errors showed up so it has to be a slicer issue. You shouldn't need to print at 100% infill... but what may help is rotating the file by 15 degrees on the virtual build plate in your slicing app before slicing it. The app will read the file differently and establish a different tool path accordingly.
Users of Slic3R and Cura seem to have issues with detailed things like this at times and minor changes can resolve the issue... I hope this helps.
All the best