One common issue we have seen with Graphtec contour cutting involves the registration marks being placed too close to the actual cut. We have found by pulling away the registration marks from the image the machine can better recognize the marks. Our typical rule of thumb for placing the registration marks would be about 1" at the minimum from the image. This also will depend on how large the image is, and what the dimensions of the sheet you are using. What size of media are you using?