I've tried on two of my computers and on my brother's computer with about every variation I could think of in terms of image size, final file type, compression, color depth, etc.. It renders fine with just the sphere, vehicle, street lights, and distance lights. The spot lights are the problem. The tutorial suggests adding light cones, wind, and turbulence. The spot lights and light cones render well in the assembly room but even one spot light alone freezes the program when the rendering progresses to the point where it shows. The capacities of the different computers affect the rendering speed but all freeze at the same point in the process. Ctrl-Alt-Delete still works but nothing much else and waiting doesn't produce any changes--it's not just suddenly going super-slow. Maybe Studio 2 is the answer but I've spent a lot of money upgrading already and seen very little benefit most of the time. I'd like to get control of the basics.