SeekerNami

In fact I am using it at a reasonable speed, just like the video tutorial recommended and it still gives me problems. Thanks anyways.

Sorry to not be of much help. I have the same issue but with a SC Model. I've done the very same steps as you and nothing seems to work. However, my SignCutPro does work (Which was hell, 'cause we never knew exactly what driver was the right one for our plotter... No instructions about that either on any of the documents provided. It was trial and error until one made our plotter work well). Please, help!!