Having some massive issues with Sketchucam. I have a drawing in Sketchup, have generated the g-code, have plotted the G-code and viewed it. It all looks good. Sent it over to the CNC and it's cutting circles that are not on the drawing. The image is correct in Sketchup and the G-code viewer within sketchup, but different when I click Visualise. Is this an error with Sketchucam?