The frame below should contain a smooth-looking pair of scissors and the words "Raylight Cutter".
If you don't see that, use a modern browser such as Chrome, Safari, or Firefox with WebGL enabled.
Also, your graphics card's latest drivers (supporting OpenGL) must be installed.
Finally, anti-aliasing must be enabled in your Graphics Properties (3D Settings), if it's supported.
If you get smooth motion and the objects turn 360 degrees in about 8 seconds, then you can probably run Raylight Cutter.