I'm 3dprinting through my schools lab, and they only have Makerbot Replicator Plus printers. Using Cura software, can I slice and export through Cura or do I have to use the Horrible Makerbot software? When I try, I get an error labeled, "There are no file formats available to write with!" can anyone interpret this or help me use Cura rather than Makerbot to prepare my prints?!