Mastercam Demo/Home Learning Edition (HLE) is free CAD/CAM software download for demo and educational purposes. It is a trial version of Mastercam that can be used to learn at home. Whether you are an industry professional, student, or teacher, if you are looking for a way to get more familiar with CAD/CAM software, Demo/HLE delivers the full. May 01, · Hey guys, I recently installed mc and after about 5 to 10 mins of working mastercam locks up, freezes up, there is nothing in the event log and there is no msg on the screen from windows or mc So this is what I have done so far and none of this has worked. called the dealer and they walked us thru a step by step and nothing worked they are just as baffled as I am.