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 same trouble with the balusters breaking. Finally resolved it by tweaking my settings in Cura. Specifically, there is an option under Travel titled "Z hop when retracted." Essentially, it lowers your build plate during retraction to avoid knocking the balusters over with your nozzle. At least, I think that's what solved it. I also printed it at 50 percent speed.