Hi, I need to 3d print a model of Chile for a school project. I've got an STL from a site called terrain2stl, combined all the files in Netfabb, but now Cura won't load it. The file is about 550MB. Slic3r, Netfabb and 3d Builder all load it on my home (gaming) machine, but the school Macbook won't load it in Cura. Am I running into a size limit? How do I load it, short of generating G-code in Slic3r?