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.
To be honest there have been many variations to many OpenBuilds part files as mods and changes take place and in order to get the latest greatest versions of the models we have created a resource section on www.OpenBuilds.com to help keep these parts easily updated.
Thingiverse is great for sharing, but not really the place to find the newest version of the OpenBuilds part files.
Hope this helps